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{{Use dmy dates|date=October 2018}}
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{{Use Indian English|date=October 2018}}
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{{for|the Indian actor|Kiran Kumar}}
{{Infobox scientist
{{Infobox scientist
| name = Deepak Dhar
| name = Deepak Dhar
| image =
| alt =
| alt =
| caption =
| caption =
| birth_date = {{Birth date and age|1951|10|30|df=y}}
| birth_date = {{Birth date and age|1951|10|30|df=y}}
| birth_place = [[Pratapgarh, Uttar Pradesh]], India
| birth_place = [[Pratapgarh, Uttar Pradesh|Pratapgarh]], [[Uttar Pradesh]], India
| death_date =
| death_date =
| death_place =
| death_place =
| residence = [[Pune]], [[Maharashtra]], India
| nationality = [[Indian nationality|Indian]]
| nationality = [[Indian nationality|Indian]]
| fields = {{ublist | [[Theoretical physics]] }}
| fields = {{ublist | [[Theoretical physics]]<br>[[Statistical physics]] }}
| workplaces = {{ublist | [[Indian Institute of Science Education and Research, Pune]] [[Tata Institute of Fundamental Research]] | [[University of Paris]] }}
| workplaces = {{ublist | [[Indian Institute of Science Education and Research, Pune]] [[Tata Institute of Fundamental Research]] | [[University of Paris]] }}
| alma_mater = {{ublist | [[University of Allahabad]] | [[IIT Kanpur]] | [[California Institute of Technology]] }}
| alma_mater = {{ublist | [[University of Allahabad]] | [[IIT Kanpur]] | [[California Institute of Technology]] }}
| doctoral_advisor = {{ublist | [[Jon Mathews]] }}
| doctoral_advisor = {{ublist | [[Jon Mathews]] }}
| doctoral_students = [[Abhishek Dhar]]
| doctoral_students = [[Abhishek Dhar]]
| awards = {{ublist| 1983 ;[[Indian National Science Academy|INSA]] Young Scientist Medal | 1991 ;[[Shanti Swarup Bhatnagar Prize]] | 1993 ;[[International Centre for Theoretical Physics|ICTP]] J. Robert Schrieffer Prize |
| known_for = Studies on [[statistical physics]] and [[stochastic processes]]
| awards = {{ublist| 1983&nbsp;[[Indian National Science Academy|INSA]] Young Scientist Medal | 1991&nbsp;[[Shanti Swarup Bhatnagar Prize]] | 1993&nbsp;[[International Centre for Theoretical Physics|ICTP]] J. Robert Schrieffer Prize |
2001 ;[[Indian National Science Academy|INSA]] S. N. Bose Medal | 2002 ;[[TWAS Prize]] | [[Indian Institute of Technology Kanpur|IITK]] Distinguished Alumni Award | 2022 [[Boltzmann Medal]] | 2023 [[Padma Bhushan]]}}
2001&nbsp;[[Indian National Science Academy|INSA]] S. N. Bose Medal | 2002&nbsp;[[TWAS Prize]] | [[Indian Institute of Technology Kanpur|IITK]] Distinguished Alumni Award }}
}}
}}
'''Deepak Dhar''' (born 30 October 1951) is an Indian theoretical physicist known for his research on [[statistical physics]] and [[stochastic processes]]. In 2022, he became the first Indian to be awarded the [[Boltzmann Medal]], the highest recognition in statistical physics awarded once every three years by [[International Union of Pure and Applied Physics|IUPAP]], for exceptional contributions to the subject.
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'''Deepak Dhar''' (born 30 October 1951) is an Indian theoretical physicist and a distinguished professor at the department of physics of [[Indian Institute of Science Education and Research, Pune]]. Known for his research on [[statistical physics]] and [[stochastic processes]], Dhar is an elected fellow of all the three major Indian science academies – [[Indian Academy of Sciences]], [[Indian National Science Academy]] and [[National Academy of Sciences, India]] – as well as of [[The World Academy of Sciences]]. The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded Dhar the [[Shanti Swarup Bhatnagar Prize for Science and Technology]], one of the highest Indian science awards, for his contributions to physical sciences in 1991.<ref name="View Bhatnagar Awardees">{{cite web | url=http://ssbprize.gov.in/Content/AwardeeList.aspx | title=View Bhatnagar Awardees | publisher=Shanti Swarup Bhatnagar Prize | date=2016 | access-date=12 November 2016}}</ref>{{Refn|group=note|Long link – please select award year to see details}}

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Dhar has been awarded the [[Padma Bhushan]] in 2023. Dhar is a winner of the [[TWAS]] prize and also an elected fellow of [[The World Academy of Sciences]]. The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded Dhar the [[Shanti Swarup Bhatnagar Prize for Science and Technology]], one of the highest Indian science awards, for his contributions to physical sciences in 1991.<ref name="View Bhatnagar Awardees">{{cite web | url=http://ssbprize.gov.in/Content/AwardeeList.aspx | title=View Bhatnagar Awardees | publisher=Shanti Swarup Bhatnagar Prize | date=2016 | access-date=12 November 2016}}</ref>{{Refn|group=note|Long link – please select award year to see details}}. He is an elected fellow of all three major Indian science academies – [[Indian Academy of Sciences]], [[Indian National Science Academy]] and [[National Academy of Sciences, India]]. Currently, he is a distinguished professor at the department of physics of [[Indian Institute of Science Education and Research, Pune]].


== Biography ==
== Biography ==
[[File:Au science faculty.jpg|thumb|235px|right|University of Allahabad]]
[[File:Au science faculty.jpg|thumb|235px|right|University of Allahabad]]
Born on 30 October 1951 at [[Pratapgarh, Uttar Pradesh|Pratapgarh]], in the north Indian state of [[Uttar Pradesh]] to Murli Dhar-Rama Gupta couple, Deepak Dhar graduated in science from the [[University of Allahabad]] in 1970 before earning a master's degree in physics from the [[Indian Institute of Technology, Kanpur]] in 1972.<ref name="Curriculum vitae on TIFR">{{Cite web |url=http://theory.tifr.res.in/~ddhar/cv2016.pdf |title=Curriculum vitae on TIFR |date=2017 |publisher=Tata Institute of Fundamental Research |access-date=2017-10-22}}</ref> Moving to the US, he enrolled for his doctoral studies under the guidance of [[Jon Mathews]] at [[California Institute of Technology]], and after securing a PhD in 1978,<ref name="Dr. Deepak Dhar Professor">{{Cite web |url=https://vidwan.inflibnet.ac.in/profile/13695 |title=Dr. Deepak Dhar Professor |date=2017 |publisher=Expert Database and National Researcher Network}}</ref> returned to India to start his career as a research fellow at [[Tata Institute of Fundamental Research]] (TIFR) the same year.<ref name="Indian fellow">{{Cite web |url=http://insaindia.res.in/detail/N95-1172 |title=Indian fellow |date=2017 |publisher=Indian National Science Academy}}</ref> After two years of research, Dhar became a full-time fellow in 1980 and served in that position until 1986 when he was promoted as a reader. Before his superannuation from regular service, Dhar held various positions at TIFR such as that of an associate professor (1991) and professor grades from G to J (1995–2008). In between, he had a one-year sabbatical at the [[University of Paris]] as a visiting scientist during 1984–85) and a month-long stint at [[Isaac Newton Institute]] in May 2006 as a Rothschild Professor. Post-retirement, Dhar continues his association with TIFR as a distinguished professor of the institution.<ref name="Home Page of Deepak Dhar at TIFR">{{Cite web |url=http://theory.tifr.res.in/~ddhar/ |title=Home Page of Deepak Dhar at TIFR |date=2017 |publisher=Tata Institute of Fundamental Research}}</ref> He also serves as a distinguished visiting faculty at the [[Indian Institute of Science Education and Research, Pune]].<ref name="Faculty details">{{Cite web |url=http://www.iiserpune.ac.in/people/faculty-details/171 |title=Faculty details |date=2017 |publisher=Indian Institute of Science Education and Research, Pune}}</ref>
Deepak was born on 30 October 1951 at [[Pratapgarh, Uttar Pradesh|Pratapgarh]], in the north Indian state of [[Uttar Pradesh]] to Murli Dhar and Rama Gupta. Dhar graduated in science from the [[University of Allahabad]] in 1970 before earning a master's degree in physics from the [[Indian Institute of Technology, Kanpur]] in 1972.<ref name="Curriculum vitae on TIFR">{{Cite web |url=http://theory.tifr.res.in/~ddhar/cv2016.pdf |title=Curriculum vitae on TIFR |date=2017 |publisher=Tata Institute of Fundamental Research |access-date=2017-10-22}}</ref> Moving to the US, he enrolled for his doctoral studies under the guidance of [[Jon Mathews]] at [[California Institute of Technology]], and after securing a PhD in 1978,<ref name="Dr. Deepak Dhar Professor">{{Cite web |url=https://vidwan.inflibnet.ac.in/profile/13695 |title=Dr. Deepak Dhar Professor |date=2017 |publisher=Expert Database and National Researcher Network}}</ref> returned to India to start his career as a research fellow at [[Tata Institute of Fundamental Research]] (TIFR) the same year.<ref name="Indian fellow">{{Cite web |url=http://insaindia.res.in/detail/N95-1172 |title=Indian fellow |date=2017 |publisher=Indian National Science Academy }}{{Dead link|date=November 2023 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> After two years of research, Dhar became a full-time fellow in 1980 and served in that position until 1986 when he was promoted as a reader. Before his superannuation from regular service, Dhar held various positions at TIFR such as that of an associate professor (1991) and professor grades from G to J (1995–2008). In between, he had a one-year sabbatical at the [[University of Paris]] as a visiting scientist during 1984–85) and a month-long stint at [[Isaac Newton Institute]] in May 2006 as a Rothschild Professor. Post-retirement, Dhar serves as a distinguished professor at the [[Indian Institute of Science Education and Research, Pune]].<ref name="Faculty details">{{Cite web |url=http://www.iiserpune.ac.in/people/faculty-details/171 |title=Faculty details |date=2017 |publisher=Indian Institute of Science Education and Research, Pune}}</ref>


Dhar is married to Manju and the couple has two children. The family lives in TIFR Housing Colony along Homi Bhabha Road in Mumbai.<ref name="NASI fellows">{{Cite web |url=http://www.nasi.org.in/fellows.asp?RsFilter=D |title=NASI fellows |date=2017 |publisher=National Academy of Sciences, India |url-status=dead |archive-url=https://web.archive.org/web/20150717020647/http://www.nasi.org.in/fellows.asp?RsFilter=D |archive-date=2015-07-17 }}</ref>
Dhar is married to Manju and the couple has two children {{Cite web |url=http://www.nasi.org.in/fellows.asp?RsFilter=D |title=NASI fellows |date=2017 |publisher=National Academy of Sciences, India |url-status=dead |archive-url=https://web.archive.org/web/20150717020647/http://www.nasi.org.in/fellows.asp?RsFilter=D |archive-date=2015-07-17 }}


== Legacy ==
== Legacy ==
[[File:BMonSphere.jpg|thumb|A computer-simulated realization of a [[Wiener process|Wiener or Brownian motion process]] (a [[continuous-time]] [[stochastic process]]) on the surface of a sphere]]
[[File:BMonSphere.jpg|thumb|A computer-simulated realization of a [[Wiener process|Wiener or Brownian motion process]] (a [[continuous-time]] [[stochastic process]]) on the surface of a sphere]]
Focusing his studies on [[statistical physics]] and [[stochastic processes]], Dhar has worked on the [[statistical mechanics]] and kinetics of random [[Lattice model (physics)|lattices]] and his work is reported to have widened our understanding of the disciplines.<ref name="Brief Profile of the Awardee">{{Cite web |url=http://ssbprize.gov.in/content/Detail.aspx?AID=182 |title=Brief Profile of the Awardee |date=2017 |publisher=Shanti Swarup Bhatnagar Prize |access-date=12 November 2016}}</ref> He is credited with the introduction of ''spectral dimension'' concept in the studies of [[fractals]] and contributed to developing a methodology for determining their [[critical phenomena]] using real-space [[renormalization group]] techniques which was the first time the mathematical apparatus was used for calculations on ''nontrivial critical exponents'' on fractals.<ref name="Indian fellow" /> Dhar worked with [[Ramakrishna Ramaswamy]] to solve the [[Abelian sandpile model]] of [[self-organized criticality]]<ref name="ICTP Prize Winner 1993">{{Cite web |url=https://www.ictp.it/about-ictp/prizes-awards/the-ictp-prize/the-prize-winners/ictp-prize-winner-1993.aspx |title=ICTP Prize Winner 1993 |date=2017 |publisher=International Centre for Theoretical Physics}}</ref> and developed a new model<ref name="Exactly solved model of self-organized critical phenomena">{{Cite journal |last=Deepak Dhar, Ramakrishna Ramaswamy |title=Exactly solved model of self-organized critical phenomena |journal=Phys. Rev. Lett. |date=1989 |volume=63 |issue=1659 |pages=1659–1662 |doi=10.1103/PhysRevLett.63.1659|pmid=10040637 |bibcode=1989PhRvL..63.1659D }}</ref> which came to be known as ''Dhar-Ramaswamy model''.<ref name="A dynamical programming approach for controlling the directed abelian Dhar-Ramaswamy model">{{cite report |arxiv= 1305.6668 |title= A dynamical programming approach for controlling the directed abelian Dhar-Ramaswamy model |last=Daniel O. Cajueiro, Roberto F. S. Andrade |date=May 2013 |publisher= Physical Review E, Statistical, Nonlinear, and Soft Matter Physics |bibcode=2010PhRvE..82c1108C }}</ref> Working on ''directed-site animals-enumeration problem''<ref name="Handbook of Shanti Swarup Bhatnagar Prize Winners">{{cite web |url= http://www.csirhrdg.res.in/ssb.pdf |title= Handbook of Shanti Swarup Bhatnagar Prize Winners |publisher= Council of Scientific and Industrial Research |date= 1999 |access-date= 20 May 2017 |archive-url= https://web.archive.org/web/20160304043957/http://www.csirhrdg.res.in/ssb.pdf |archive-date= 4 March 2016 |url-status= dead }}</ref> using [[Bethe ansatz]] method, he proposed the evolution operator which has since been subjected to studies by other researchers as ''Dhar directed-site animals-enumeration problem''.<ref name="On the Dhar directed-site animals-enumeration problem for the simple cubic lattice">{{Cite journal |last=G. S. Joyce |title=On the Dhar directed-site animals-enumeration problem for the simple cubic lattice |journal=Journal of Physics A: Mathematical and General |date=1989 |volume=22 |issue=19 |pages=L919–L924 |doi=10.1088/0305-4470/22/19/001|bibcode=1989JPhA...22L.919J }}</ref><ref name="Enumeration of directed animals on an infinite family of lattices">{{Cite journal |last=Mireille Bousquet-Mélou, Andrew R Conway |title=Enumeration of directed animals on an infinite family of lattices |journal=Journal of Physics A: Mathematical and General |date=1996 |volume=29 |issue=13 |pages=L919–L924 |doi=10.1088/0305-4470/22/19/001|bibcode=1989JPhA...22L.919J }}</ref> Dhar also demonstrated the predominance of slow flipping of ''isolated unfrustrated clusters'' in auto-correlation functions and proposed models of metastable glassy states in stochastic evolution.<ref name="Indian fellow" /> His studies have been documented by way of a number of articles<ref name="On ResearchGate">{{Cite web |url=https://www.researchgate.net/profile/Deepak_Dhar/publications |title=On ResearchGate |date=2017 }}</ref><ref name="On Google Scholar">{{Cite web |url=https://scholar.google.co.in/citations?user=dl1wQfwAAAAJ&hl=en |title=On Google Scholar |date=2017 |publisher=Google Scholar}}</ref>{{Refn|group=note|Please see ''Selected bibliography'' section}} and the online article repository of Indian Academy of Sciences has listed 113 of them.<ref name="Browse by Fellow">{{Cite web |url=http://repository.ias.ac.in/view/fellows/Dhar=3ADeepak=3A=3A.html |title=Browse by Fellow |date=2017 |publisher=Indian Academy of Sciences}}</ref>
Focusing his studies on [[statistical physics]] and [[stochastic processes]], Dhar has worked on the [[statistical mechanics]] and kinetics of random [[Lattice model (physics)|lattices]] and his work is reported to have widened our understanding of the disciplines.<ref name="Brief Profile of the Awardee">{{Cite web |url=http://ssbprize.gov.in/content/Detail.aspx?AID=182 |title=Brief Profile of the Awardee |date=2017 |publisher=Shanti Swarup Bhatnagar Prize |access-date=12 November 2016}}</ref> He is credited with the introduction of ''[[spectral dimension]]'' concept in the studies of [[fractals]] and contributed to developing a methodology for determining their [[critical phenomena]] using real-space [[renormalization group]] techniques which was the first time the mathematical apparatus was used for calculations on ''nontrivial critical exponents'' on fractals.<ref name="Indian fellow" /> Dhar worked with [[Ramakrishna Ramaswamy]] to solve the [[Abelian sandpile model]] of [[self-organized criticality]]<ref name="ICTP Prize Winner 1993">{{Cite web |url=https://www.ictp.it/about-ictp/prizes-awards/the-ictp-prize/the-prize-winners/ictp-prize-winner-1993.aspx |title=ICTP Prize Winner 1993 |date=2017 |publisher=International Centre for Theoretical Physics}}</ref> and developed a new model<ref name="Exactly solved model of self-organized critical phenomena">{{Cite journal |last=Deepak Dhar, Ramakrishna Ramaswamy |title=Exactly solved model of self-organized critical phenomena |journal=Phys. Rev. Lett. |date=1989 |volume=63 |issue=1659 |pages=1659–1662 |doi=10.1103/PhysRevLett.63.1659|pmid=10040637 |bibcode=1989PhRvL..63.1659D |s2cid=9637234 }}</ref> which came to be known as ''Dhar-Ramaswamy model''.<ref name="A dynamical programming approach for controlling the directed abelian Dhar-Ramaswamy model">{{cite report |arxiv= 1305.6668 |title= A dynamical programming approach for controlling the directed abelian Dhar-Ramaswamy model |last=Daniel O. Cajueiro, Roberto F. S. Andrade |date=May 2013 |publisher= Physical Review E, Statistical, Nonlinear, and Soft Matter Physics |bibcode=2010PhRvE..82c1108C }}</ref> Working on ''directed-site animals-enumeration problem''<ref name="Handbook of Shanti Swarup Bhatnagar Prize Winners">{{cite web |url= http://www.csirhrdg.res.in/ssb.pdf |title= Handbook of Shanti Swarup Bhatnagar Prize Winners |publisher= Council of Scientific and Industrial Research |date= 1999 |access-date= 20 May 2017 |archive-url= https://web.archive.org/web/20160304043957/http://www.csirhrdg.res.in/ssb.pdf |archive-date= 4 March 2016 |url-status= dead }}</ref> using [[Bethe ansatz]] method, he proposed the evolution operator which has since been subjected to studies by other researchers as ''Dhar directed-site animals-enumeration problem''.<ref name="On the Dhar directed-site animals-enumeration problem for the simple cubic lattice">{{Cite journal |last=G. S. Joyce |title=On the Dhar directed-site animals-enumeration problem for the simple cubic lattice |journal=Journal of Physics A: Mathematical and General |date=1989 |volume=22 |issue=19 |pages=L919–L924 |doi=10.1088/0305-4470/22/19/001|bibcode=1989JPhA...22L.919J }}</ref><ref name="Enumeration of directed animals on an infinite family of lattices">{{Cite journal |last=Mireille Bousquet-Mélou, Andrew R Conway |title=Enumeration of directed animals on an infinite family of lattices |journal=Journal of Physics A: Mathematical and General |date=1996 |volume=29 |issue=13 |pages=L919–L924 |doi=10.1088/0305-4470/22/19/001|bibcode=1989JPhA...22L.919J }}</ref> Dhar also demonstrated the predominance of slow flipping of ''isolated unfrustrated clusters'' in auto-correlation functions and proposed models of metastable glassy states in stochastic evolution.<ref name="Indian fellow" /> His studies have been documented by way of a number of articles<ref name="On ResearchGate">{{Cite web |url=https://www.researchgate.net/profile/Deepak_Dhar/publications |title=On ResearchGate |date=2017 }}</ref><ref name="On Google Scholar">{{Cite web |url=https://scholar.google.co.in/citations?user=dl1wQfwAAAAJ&hl=en |title=On Google Scholar |date=2017 |publisher=Google Scholar}}</ref>{{Refn|group=note|Please see ''Selected bibliography'' section}} and the online article repository of Indian Academy of Sciences has listed 113 of them.<ref name="Browse by Fellow">{{Cite web |url=http://repository.ias.ac.in/view/fellows/Dhar=3ADeepak=3A=3A.html |title=Browse by Fellow |date=2017 |publisher=Indian Academy of Sciences}}</ref>


Dhar is an associate editor of [[Journal of Statistical Physics]], a [[Springer Science+Business Media|Springer]] publication since 2005 where he sat in the editorial board on two previous terms (1993–96 and 1999–2002).<ref name="Journal of Statistical Physics">{{Cite web |url=https://www.springer.com/physics/complexity/journal/10955?detailsPage=editorialBoard |title=Journal of Statistical Physics |date=2017 |publisher=Springer}}</ref> He is an editorial board member of the ''Indian Journal of Pure and Applied Physics'' (IJPAP) of the [[National Institute of Science Communication and Information Resources]] (NISCAIR),<ref name="Editorial Board IJPAP">{{Cite web |url=http://www.niscair.res.in/sciencecommunication/researchjournals/rejour/ijpap/ijpap0_march07.asp |title=Editorial Board IJPAP |date=2017 |publisher=National Institute of Science Communication and Information Resources}}</ref> a former editorial adviser to [[Physica A]], an [[Elsevier]] science journal, and has been associated with journals such as ''Journal of Statistical Mechanics: Theory and Experiment'', [[Physical Review E]] and [[Pramana (journal)|Pramana]] as an editorial board member. He was a member of the ''Commission on Statistical Physics'' of the [[International Union of Pure and Applied Physics]] from 1992 to 1995<ref name="Curriculum vitae on TIFR" /> and is a member of the program committee of the [[International Centre for Theoretical Sciences]].<ref name="ICTS Program committee">{{Cite web |url=https://www.icts.res.in/people/deepak-dhar |title=ICTS Program committee |date=2017 |publisher=International Centre for Theoretical Sciences}}</ref> Dhar has also delivered invited speeches and the special lecture on ''The Curious Relationship Between Physics and Mathematics'' at the University of Mumbai on 19 October 2016 was one among them.<ref name="Special lecture">{{Cite web |url=http://mu.ac.in/portal/wp-content/uploads/2014/04/noticephysics.pdf |title=Special lecture |date=2016 |publisher=University of Mumbai}}</ref>
Dhar is an associate editor of [[Journal of Statistical Physics]], a [[Springer Science+Business Media|Springer]] publication since 2005 where he sat in the editorial board on two previous terms (1993–96 and 1999–2002).<ref name="Journal of Statistical Physics">{{Cite web |url=https://www.springer.com/physics/complexity/journal/10955?detailsPage=editorialBoard |title=Journal of Statistical Physics |date=2017 |publisher=Springer}}</ref> He is an editorial board member of the ''Indian Journal of Pure and Applied Physics'' (IJPAP) of the [[National Institute of Science Communication and Information Resources]] (NISCAIR),<ref name="Editorial Board IJPAP">{{Cite web |url=http://www.niscair.res.in/sciencecommunication/researchjournals/rejour/ijpap/ijpap0_march07.asp |title=Editorial Board IJPAP |date=2017 |publisher=National Institute of Science Communication and Information Resources}}</ref> a former editorial adviser to [[Physica A]], an [[Elsevier]] science journal, and has been associated with journals such as ''Journal of Statistical Mechanics: Theory and Experiment'', [[Physical Review E]] and [[Pramana (journal)|Pramana]] as an editorial board member. He was a member of the ''Commission on Statistical Physics'' of the [[International Union of Pure and Applied Physics]] from 1992 to 1995<ref name="Curriculum vitae on TIFR" /> and is a member of the program committee of the International Centre for Theoretical Sciences.<ref name="ICTS Program committee">{{Cite web |url=https://www.icts.res.in/people/deepak-dhar |title=ICTS Program committee |date=2017 |publisher=International Centre for Theoretical Sciences}}</ref> Dhar has also delivered invited speeches and the special lecture on ''The Curious Relationship Between Physics and Mathematics'' at the University of Mumbai on 19 October 2016 was one among them.<ref name="Special lecture">{{Cite web |url=http://mu.ac.in/portal/wp-content/uploads/2014/04/noticephysics.pdf |title=Special lecture |date=2016 |publisher=University of Mumbai |access-date=20 May 2017 |archive-date=15 February 2017 |archive-url=https://web.archive.org/web/20170215223552/http://mu.ac.in/portal/wp-content/uploads/2014/04/noticephysics.pdf |url-status=dead }}</ref>


== Awards and honors ==
== Awards and honors ==
During his doctoral days at [[California Institute of Technology|Caltech]], Dhar held two institutional fellowships; E. P. Anthony fellowship (1972–73) and R. P. Feynman fellowship (1974–76).<ref name="Curriculum vitae on TIFR" /> He received the Young Scientist Medal of the Indian National Science Academy in 1983.<ref name="Young Scientists Medal">{{Cite web |url=http://insaindia.res.in/youngmedal.php |title=Young Scientists Medal |date=2017 |publisher=Indian National Science Academy}}</ref> The Council of Scientific and Industrial Research awarded him the [[Shanti Swarup Bhatnagar Prize]], one of the highest Indian science awards in 1991.<ref name="CSIR list of Awardees">{{Cite web |url=http://www.csir.res.in/careeraward/prize-winner-indexdiscipline-wise |title=CSIR list of Awardees |date=2017 |publisher=Council of Scientific and Industrial Research}}</ref> Two year's later, [[International Centre for Theoretical Physics]] selected him for the 1993 J. Robert Schrieffer Prize.<ref name="ICTP Prize Winner 1993" /> INSA honored Dhar again in 2001 with the Satyendranath Bose Medal<ref name="Satyendranath Bose Medal">{{Cite web |url=http://insaindia.res.in/recipients.php |title=Satyendranath Bose Medal |date=2017 |publisher=Indian National Science Academy}}</ref> and he received the [[TWAS Prize]] of [[The World Academy of Sciences]] in 2002.<ref name="Recipients of TWAS Awards and Prizes">{{Cite web |url=https://twas.org/recipients-twas-awards-and-prizes |title=Recipients of TWAS Awards and Prizes |date=2017 |publisher=The World Academy of Sciences}}</ref>
During his doctoral days at [[California Institute of Technology|Caltech]], Dhar held two institutional fellowships; E. P. Anthony fellowship (1972–73) and R. P. Feynman fellowship (1974–76).<ref name="Curriculum vitae on TIFR" /> He received the Young Scientist Medal of the Indian National Science Academy in 1983.<ref name="Young Scientists Medal">{{Cite web |url=http://insaindia.res.in/youngmedal.php |title=Young Scientists Medal |date=2017 |publisher=Indian National Science Academy |access-date=20 May 2017 |archive-date=11 May 2021 |archive-url=https://web.archive.org/web/20210511084357/https://www.insaindia.res.in/youngmedal.php |url-status=dead }}</ref> The Council of Scientific and Industrial Research awarded him the [[Shanti Swarup Bhatnagar Prize]], one of the highest Indian science awards in 1991.<ref name="CSIR list of Awardees">{{Cite web |url=http://www.csir.res.in/careeraward/prize-winner-indexdiscipline-wise |title=CSIR list of Awardees |date=2017 |publisher=Council of Scientific and Industrial Research}}</ref> Two year's later, [[International Centre for Theoretical Physics]] selected him for the 1993 J. Robert Schrieffer Prize.<ref name="ICTP Prize Winner 1993" /> INSA honored Dhar again in 2001 with the Satyendranath Bose Medal<ref name="Satyendranath Bose Medal">{{Cite web |url=http://insaindia.res.in/recipients.php |title=Satyendranath Bose Medal |date=2017 |publisher=Indian National Science Academy |access-date=20 May 2017 |archive-date=16 September 2016 |archive-url=https://web.archive.org/web/20160916233840/http://insaindia.res.in/recipients.php |url-status=dead }}</ref> and he received the [[TWAS Prize]] of [[The World Academy of Sciences]] in 2002.<ref name="Recipients of TWAS Awards and Prizes">{{Cite web |url=https://twas.org/recipients-twas-awards-and-prizes |title=Recipients of TWAS Awards and Prizes |date=2017 |publisher=The World Academy of Sciences}}</ref>

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Dhar was elected as a fellow by the Indian Academy of Sciences in 1990 where he is a sitting council member.<ref name="Fellow profile">{{Cite web |url=http://www.ias.ac.in/describe/fellow/Dhar,_Prof._Deepak |title=Fellow profile |date=2017 |publisher=Indian Academy of Sciences}}</ref> He became an elected fellow of the Indian National Science Academy on 1995<ref name="INSA Year Book 2016">{{Cite web |url=http://www.insaindia.res.in/pdf/YearBook_2016.pdf |title=INSA Year Book 2016 |date=2017 |publisher=Indian National Science Academy |access-date=20 May 2017 |archive-url=https://web.archive.org/web/20161104001952/http://www.insaindia.res.in/pdf/YearBook_2016.pdf |archive-date=4 November 2016 |url-status=dead }}</ref> and the National Academy of Sciences, India elected him as a fellow in 1999.<ref name="NASI Year Book 2015">{{Cite web |url=http://www.nasi.org.in/Year%20Book%202015.pdf |title=NASI Year Book 2015 |date=2017 |publisher=National Academy of Sciences, India |url-status=dead |archive-url=https://web.archive.org/web/20150806211716/http://www.nasi.org.in/Year%20Book%202015.pdf |archive-date=2015-08-06 }}</ref> Dhar received the elected fellowship of the World Academy of Sciences in 2006<ref name="TWAS fellow">{{Cite web |url=https://twas.org/member/dhar-deepak |title=TWAS fellow |date=2017 |publisher=The World Academy of Sciences |access-date=20 May 2017 |archive-date=21 June 2016 |archive-url=https://web.archive.org/web/20160621201818/http://twas.org/member/dhar-deepak |url-status=dead }}</ref> and was selected for the J. C. Bose National fellowship of the [[Science and Engineering Research Board]] in 2007, with the tenure running until 2017.<ref name="Curriculum vitae on TIFR" />


Dhar has been chosen for the prestigious [[Boltzmann Medal]] award for the year 2022 and becomes the first Indian to receive the honor.<ref name="boltzmann">{{cite web| url=https://indianexpress.com/article/cities/pune/iiser-professor-deepak-dhar-becomes-first-indian-to-bag-boltzmann-medal-7791557/| title=IISER professor Deepak Dhar becomes first Indian to bag Boltzmann Medal| date=26 February 2022| work=[[Indian Express Limited|The Indian Express]]}}</ref> It is bestowed upon a scientist with exceptional contributions in the field of statistical physics, every three year. Dhar shares his prize with [[John Hopfield]].<ref name="boltzmann"/> He received the 2023 [[Padma Bhushan]], the third highest civilian award by Government of India.<ref>{{cite web| url=https://www.pib.gov.in/PressReleasePage.aspx?PRID=1893797| title=Padma Awards 2023 announced}}</ref>
⚫
Dhar was elected as a fellow by the Indian Academy of Sciences in 1990 where he is a sitting council member.<ref name="Fellow profile">{{Cite web |url=http://www.ias.ac.in/describe/fellow/Dhar,_Prof._Deepak |title=Fellow profile |date=2017 |publisher=Indian Academy of Sciences}}</ref> He became an elected fellow of the Indian National Science Academy on 1995<ref name="INSA Year Book 2016">{{Cite web |url=http://www.insaindia.res.in/pdf/YearBook_2016.pdf |title=INSA Year Book 2016 |date=2017 |publisher=Indian National Science Academy |access-date=20 May 2017 |archive-url=https://web.archive.org/web/20161104001952/http://www.insaindia.res.in/pdf/YearBook_2016.pdf |archive-date=4 November 2016 |url-status=dead }}</ref> and the National Academy of Sciences, India elected him as a fellow in 1999.<ref name="NASI Year Book 2015">{{Cite web |url=http://www.nasi.org.in/Year%20Book%202015.pdf |title=NASI Year Book 2015 |date=2017 |publisher=National Academy of Sciences, India |url-status=dead |archive-url=https://web.archive.org/web/20150806211716/http://www.nasi.org.in/Year%20Book%202015.pdf |archive-date=2015-08-06 }}</ref> Dhar received the elected fellowship of the World Academy of Sciences in 2006<ref name="TWAS fellow">{{Cite web |url=https://twas.org/member/dhar-deepak |title=TWAS fellow |date=2017 |publisher=The World Academy of Sciences}}</ref> and was selected for the J. C. Bose National fellowship of the [[Science and Engineering Research Board]] in 2007, with the tenure running until 2017.<ref name="Curriculum vitae on TIFR" />


== Selected bibliography ==
== Selected bibliography ==
* {{Cite journal |last=Deepak Dhar |title=Exact Solution of a Directed-Site Animals-Enumeration Problem in Three Dimensions |journal=Phys. Rev. Lett. |date=1983 |volume=51 |issue=10 |pages=853–856 |doi=10.1103/PhysRevLett.51.853|bibcode=1983PhRvL..51..853D }}
* {{Cite journal |last=Deepak Dhar |title=Exact Solution of a Directed-Site Animals-Enumeration Problem in Three Dimensions |journal=Phys. Rev. Lett. |date=1983 |volume=51 |issue=10 |pages=853–856 |doi=10.1103/PhysRevLett.51.853|bibcode=1983PhRvL..51..853D }}
* {{Cite journal |last=Deepak Dhar, Ramakrishna Ramaswamy |title=Exactly solved model of self-organized critical phenomena |journal=Phys. Rev. Lett. |date=1989 |volume=63 |issue=1659 |pages=1659–1662 |doi=10.1103/PhysRevLett.63.1659|pmid=10040637 |bibcode=1989PhRvL..63.1659D }}
* {{Cite journal |last=Deepak Dhar, Ramakrishna Ramaswamy |title=Exactly solved model of self-organized critical phenomena |journal=Phys. Rev. Lett. |date=1989 |volume=63 |issue=1659 |pages=1659–1662 |doi=10.1103/PhysRevLett.63.1659|pmid=10040637 |bibcode=1989PhRvL..63.1659D |s2cid=9637234 }}
* {{Cite journal |last=D Dhar, S N Majumdar |title=Abelian sandpile model on the Bethe lattice |journal=Journal of Physics A: Mathematical and General |date=1990 |volume=23 |issue=4333 |pages=4333–4350 |doi=10.1088/0305-4470/23/19/018|bibcode=1990JPhA...23.4333D |citeseerx=10.1.1.727.7377 }}
* {{Cite journal |last=D Dhar, S N Majumdar |title=Abelian sandpile model on the Bethe lattice |journal=Journal of Physics A: Mathematical and General |date=1990 |volume=23 |issue=4333 |pages=4333–4350 |doi=10.1088/0305-4470/23/19/018|bibcode=1990JPhA...23.4333D |citeseerx=10.1.1.727.7377 }}
* {{Cite journal |last=Deepak Dhar |title=Self-organized critical state of sandpile automaton models |journal=Phys. Rev. Lett. |date=1990 |volume=64 |issue=14 |pages=1613–1616 |doi=10.1103/PhysRevLett.64.1613|pmid=10041442 |bibcode=1990PhRvL..64.1613D }}
* {{Cite journal |last=Deepak Dhar |title=Self-organized critical state of sandpile automaton models |journal=Phys. Rev. Lett. |date=1990 |volume=64 |issue=14 |pages=1613–1616 |doi=10.1103/PhysRevLett.64.1613|pmid=10041442 |bibcode=1990PhRvL..64.1613D }}
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* {{Cite web |url=https://www.youtube.com/watch?v=30WNNl5Fj7s |title=Directed percolation and Sandpile models |last=Deepak Dhar |date=8 July 2015 |publisher=International Centre for Theoretical Sciences |work=Presentation at Bangalore School on Statistical Physics}}
* {{Cite web |url=https://www.youtube.com/watch?v=30WNNl5Fj7s |title=Directed percolation and Sandpile models |last=Deepak Dhar |date=8 July 2015 |publisher=International Centre for Theoretical Sciences |work=Presentation at Bangalore School on Statistical Physics}}


{{SSBPST recipients in Physical Science}}
{{SSBPST recipients in Physical Science}}{{Padma Bhushan Award Recipients 2020–2029}}{{Authority control}}
{{Authority control}}


{{DEFAULTSORT:Dhar, Deepak}}
{{DEFAULTSORT:Dhar, Deepak}}
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[[Category:Indian theoretical physicists]]
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[[Category:University of Allahabad alumni]]
[[Category:University of Allahabad alumni]]
[[Category:Indian Institute of Technology Kanpur alumni]]
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[[Category:California Institute of Technology alumni]]
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[[Category:Tata Institute of Fundamental Research faculty]]
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[[Category:University of Paris faculty]]
[[Category:Academic staff of the University of Paris]]
[[Category:TWAS fellows]]
[[Category:TWAS fellows]]
[[Category:Fellows of The National Academy of Sciences, India]]
[[Category:Fellows of the National Academy of Sciences, India]]
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[[Category:Recipients of the Padma Bhushan in science & engineering]]

Latest revision as of 09:06, 10 October 2024

For the Indian actor, see Kiran Kumar.
Deepak Dhar
Born (1951-10-30) 30 October 1951 (age 73)
Pratapgarh, Uttar Pradesh, India
NationalityIndian
Alma mater
Awards
Scientific career
Fields
Institutions
Doctoral advisor
Doctoral studentsAbhishek Dhar

Deepak Dhar (born 30 October 1951) is an Indian theoretical physicist known for his research on statistical physics and stochastic processes. In 2022, he became the first Indian to be awarded the Boltzmann Medal, the highest recognition in statistical physics awarded once every three years by IUPAP, for exceptional contributions to the subject.

Dhar has been awarded the Padma Bhushan in 2023. Dhar is a winner of the TWAS prize and also an elected fellow of The World Academy of Sciences. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded Dhar the Shanti Swarup Bhatnagar Prize for Science and Technology, one of the highest Indian science awards, for his contributions to physical sciences in 1991.[1][note 1]. He is an elected fellow of all three major Indian science academies – Indian Academy of Sciences, Indian National Science Academy and National Academy of Sciences, India. Currently, he is a distinguished professor at the department of physics of Indian Institute of Science Education and Research, Pune.

Biography

[edit]
University of Allahabad

Deepak was born on 30 October 1951 at Pratapgarh, in the north Indian state of Uttar Pradesh to Murli Dhar and Rama Gupta. Dhar graduated in science from the University of Allahabad in 1970 before earning a master's degree in physics from the Indian Institute of Technology, Kanpur in 1972.[2] Moving to the US, he enrolled for his doctoral studies under the guidance of Jon Mathews at California Institute of Technology, and after securing a PhD in 1978,[3] returned to India to start his career as a research fellow at Tata Institute of Fundamental Research (TIFR) the same year.[4] After two years of research, Dhar became a full-time fellow in 1980 and served in that position until 1986 when he was promoted as a reader. Before his superannuation from regular service, Dhar held various positions at TIFR such as that of an associate professor (1991) and professor grades from G to J (1995–2008). In between, he had a one-year sabbatical at the University of Paris as a visiting scientist during 1984–85) and a month-long stint at Isaac Newton Institute in May 2006 as a Rothschild Professor. Post-retirement, Dhar serves as a distinguished professor at the Indian Institute of Science Education and Research, Pune.[5]

Dhar is married to Manju and the couple has two children "NASI fellows". National Academy of Sciences, India. 2017. Archived from the original on 17 July 2015.

Legacy

[edit]
A computer-simulated realization of a Wiener or Brownian motion process (a continuous-time stochastic process) on the surface of a sphere

Focusing his studies on statistical physics and stochastic processes, Dhar has worked on the statistical mechanics and kinetics of random lattices and his work is reported to have widened our understanding of the disciplines.[6] He is credited with the introduction of spectral dimension concept in the studies of fractals and contributed to developing a methodology for determining their critical phenomena using real-space renormalization group techniques which was the first time the mathematical apparatus was used for calculations on nontrivial critical exponents on fractals.[4] Dhar worked with Ramakrishna Ramaswamy to solve the Abelian sandpile model of self-organized criticality[7] and developed a new model[8] which came to be known as Dhar-Ramaswamy model.[9] Working on directed-site animals-enumeration problem[10] using Bethe ansatz method, he proposed the evolution operator which has since been subjected to studies by other researchers as Dhar directed-site animals-enumeration problem.[11][12] Dhar also demonstrated the predominance of slow flipping of isolated unfrustrated clusters in auto-correlation functions and proposed models of metastable glassy states in stochastic evolution.[4] His studies have been documented by way of a number of articles[13][14][note 2] and the online article repository of Indian Academy of Sciences has listed 113 of them.[15]

Dhar is an associate editor of Journal of Statistical Physics, a Springer publication since 2005 where he sat in the editorial board on two previous terms (1993–96 and 1999–2002).[16] He is an editorial board member of the Indian Journal of Pure and Applied Physics (IJPAP) of the National Institute of Science Communication and Information Resources (NISCAIR),[17] a former editorial adviser to Physica A, an Elsevier science journal, and has been associated with journals such as Journal of Statistical Mechanics: Theory and Experiment, Physical Review E and Pramana as an editorial board member. He was a member of the Commission on Statistical Physics of the International Union of Pure and Applied Physics from 1992 to 1995[2] and is a member of the program committee of the International Centre for Theoretical Sciences.[18] Dhar has also delivered invited speeches and the special lecture on The Curious Relationship Between Physics and Mathematics at the University of Mumbai on 19 October 2016 was one among them.[19]

Awards and honors

[edit]

During his doctoral days at Caltech, Dhar held two institutional fellowships; E. P. Anthony fellowship (1972–73) and R. P. Feynman fellowship (1974–76).[2] He received the Young Scientist Medal of the Indian National Science Academy in 1983.[20] The Council of Scientific and Industrial Research awarded him the Shanti Swarup Bhatnagar Prize, one of the highest Indian science awards in 1991.[21] Two year's later, International Centre for Theoretical Physics selected him for the 1993 J. Robert Schrieffer Prize.[7] INSA honored Dhar again in 2001 with the Satyendranath Bose Medal[22] and he received the TWAS Prize of The World Academy of Sciences in 2002.[23]

Dhar was elected as a fellow by the Indian Academy of Sciences in 1990 where he is a sitting council member.[24] He became an elected fellow of the Indian National Science Academy on 1995[25] and the National Academy of Sciences, India elected him as a fellow in 1999.[26] Dhar received the elected fellowship of the World Academy of Sciences in 2006[27] and was selected for the J. C. Bose National fellowship of the Science and Engineering Research Board in 2007, with the tenure running until 2017.[2]

Dhar has been chosen for the prestigious Boltzmann Medal award for the year 2022 and becomes the first Indian to receive the honor.[28] It is bestowed upon a scientist with exceptional contributions in the field of statistical physics, every three year. Dhar shares his prize with John Hopfield.[28] He received the 2023 Padma Bhushan, the third highest civilian award by Government of India.[29]

Selected bibliography

[edit]

See also

[edit]

Notes

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  1. ^ Long link – please select award year to see details
  2. ^ Please see Selected bibliography section

References

[edit]
  1. ^ "View Bhatnagar Awardees". Shanti Swarup Bhatnagar Prize. 2016. Retrieved 12 November 2016.
  2. ^ a b c d "Curriculum vitae on TIFR" (PDF). Tata Institute of Fundamental Research. 2017. Retrieved 22 October 2017.
  3. ^ "Dr. Deepak Dhar Professor". Expert Database and National Researcher Network. 2017.
  4. ^ a b c "Indian fellow". Indian National Science Academy. 2017.[permanent dead link‍]
  5. ^ "Faculty details". Indian Institute of Science Education and Research, Pune. 2017.
  6. ^ "Brief Profile of the Awardee". Shanti Swarup Bhatnagar Prize. 2017. Retrieved 12 November 2016.
  7. ^ a b "ICTP Prize Winner 1993". International Centre for Theoretical Physics. 2017.
  8. ^ Deepak Dhar, Ramakrishna Ramaswamy (1989). "Exactly solved model of self-organized critical phenomena". Phys. Rev. Lett. 63 (1659): 1659–1662. Bibcode:1989PhRvL..63.1659D. doi:10.1103/PhysRevLett.63.1659. PMID 10040637. S2CID 9637234.
  9. ^ Daniel O. Cajueiro, Roberto F. S. Andrade (May 2013). A dynamical programming approach for controlling the directed abelian Dhar-Ramaswamy model (Report). Physical Review E, Statistical, Nonlinear, and Soft Matter Physics. arXiv:1305.6668. Bibcode:2010PhRvE..82c1108C.
  10. ^ "Handbook of Shanti Swarup Bhatnagar Prize Winners" (PDF). Council of Scientific and Industrial Research. 1999. Archived from the original (PDF) on 4 March 2016. Retrieved 20 May 2017.
  11. ^ G. S. Joyce (1989). "On the Dhar directed-site animals-enumeration problem for the simple cubic lattice". Journal of Physics A: Mathematical and General. 22 (19): L919–L924. Bibcode:1989JPhA...22L.919J. doi:10.1088/0305-4470/22/19/001.
  12. ^ Mireille Bousquet-Mélou, Andrew R Conway (1996). "Enumeration of directed animals on an infinite family of lattices". Journal of Physics A: Mathematical and General. 29 (13): L919–L924. Bibcode:1989JPhA...22L.919J. doi:10.1088/0305-4470/22/19/001.
  13. ^ "On ResearchGate". 2017.
  14. ^ "On Google Scholar". Google Scholar. 2017.
  15. ^ "Browse by Fellow". Indian Academy of Sciences. 2017.
  16. ^ "Journal of Statistical Physics". Springer. 2017.
  17. ^ "Editorial Board IJPAP". National Institute of Science Communication and Information Resources. 2017.
  18. ^ "ICTS Program committee". International Centre for Theoretical Sciences. 2017.
  19. ^ "Special lecture" (PDF). University of Mumbai. 2016. Archived from the original (PDF) on 15 February 2017. Retrieved 20 May 2017.
  20. ^ "Young Scientists Medal". Indian National Science Academy. 2017. Archived from the original on 11 May 2021. Retrieved 20 May 2017.
  21. ^ "CSIR list of Awardees". Council of Scientific and Industrial Research. 2017.
  22. ^ "Satyendranath Bose Medal". Indian National Science Academy. 2017. Archived from the original on 16 September 2016. Retrieved 20 May 2017.
  23. ^ "Recipients of TWAS Awards and Prizes". The World Academy of Sciences. 2017.
  24. ^ "Fellow profile". Indian Academy of Sciences. 2017.
  25. ^ "INSA Year Book 2016" (PDF). Indian National Science Academy. 2017. Archived from the original (PDF) on 4 November 2016. Retrieved 20 May 2017.
  26. ^ "NASI Year Book 2015" (PDF). National Academy of Sciences, India. 2017. Archived from the original (PDF) on 6 August 2015.
  27. ^ "TWAS fellow". The World Academy of Sciences. 2017. Archived from the original on 21 June 2016. Retrieved 20 May 2017.
  28. ^ a b "IISER professor Deepak Dhar becomes first Indian to bag Boltzmann Medal". The Indian Express. 26 February 2022.
  29. ^ "Padma Awards 2023 announced".
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