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{{short description|Indian theoretical physicist}}
{{Short description|Indian-American theoretical physicist}}
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{{redirect|Ashtekar|Ashtekar Surname|Swakula Sali}}
{{Use dmy dates|date=November 2019}}
{{Use dmy dates|date=November 2019}}
{{Use Indian English|date=October 2018}}
{{Use Indian English|date=October 2018}}
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{{redirect|Ashtekar|Ashtekar Surname|Swakula Sali}}
{{Infobox scientist
{{Infobox scientist
| name = Abhay Vasant Ashtekar
| name = Abhay Vasant Ashtekar
| caption =
| caption =
| birth_date = {{Birth date and age|df=yes|1949|7|5}}
| birth_date = {{Birth date and age|df=yes|1949|7|5}}
| birth_place = [[Kolhapur]], [[Maharashtra]], [[India]]<ref name="NYT2">{{cite news|url=https://www.nytimes.com/1999/04/20/science/scientist-at-work-abhay-ashtekar-taste-testing-a-recipe-for-the-cosmos.html?pagewanted=2|title=Science at work - page 2|newspaper=The New York Times | first=James | last=Glanz | date=20 April 1999 | accessdate=23 April 2010}}</ref>
| birth_place = [[Kolhapur]], Maharashtra, India<ref name="NYT2">{{cite news|url=https://www.nytimes.com/1999/04/20/science/scientist-at-work-abhay-ashtekar-taste-testing-a-recipe-for-the-cosmos.html?pagewanted=2|title=Science at work - page 2|newspaper=The New York Times | first=James | last=Glanz | date=20 April 1999 | access-date=23 April 2010}}</ref>
| death_date =
| death_date =
| death_place =
| death_place =
| residence = [[United States]]
| fields = [[Theoretical physics]]
⚫
| workplaces = [[Pennsylvania State University]]
| citizenship =
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| alma_mater = [[University of Texas, Austin]], [[University of Chicago]]
| nationality = [[India]]n
| fields = [[Theoretical physics]]
| doctoral_advisor = [[Robert Geroch]]
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| workplaces = [[Pennsylvania State University]]
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| alma_mater = [[University of Texas, Austin]]; [[University of Chicago]]
| doctoral_advisor = [[Robert Geroch]]
| doctoral_students =
| doctoral_students =
| known_for = [[Ashtekar variables]]
| known_for = [[Ashtekar variables]]
[[Quantum gravity]]
| awards = Member of National Academy of Sciences, First [[Gravity Prize]] by the [[Gravity Research Foundation]], [[Massachusetts]], Einstein Prize
| awards = Member of [[National Academy of Sciences]], first Gravity Prize by the [[Gravity Research Foundation]], [[Massachusetts]], Einstein Prize
| signature = <!--(filename only)-->
| signature = <!--(filename only)-->
| footnotes =
| footnotes =
}}
}}
'''Abhay Vasant Ashtekar''' (born 5 July 1949) is an Indian theoretical physicist. He is the Eberly Professor of Physics and the Director of the Institute for Gravitational Physics and Geometry at [[Pennsylvania State University]]. As the creator of [[Ashtekar variables]], he is one of the founders of [[loop quantum gravity]] and its subfield [[loop quantum cosmology]].<ref>http://www.freepressjournal.in/world/indian-american-professor-abhay-ashtekar-wins-einstein-prize-7-facts-about-the-physicist/1378066</ref> He has also written a number of descriptions of loop quantum gravity that are accessible to non-physicists. In 1999, Ashtekar and his colleagues were able to calculate the [[entropy]] for a [[black hole]], matching a legendary 1974 prediction by [[Stephen Hawking|Hawking]].<ref>{{cite news|url=https://www.nytimes.com/1999/04/20/science/scientist-at-work-abhay-ashtekar-taste-testing-a-recipe-for-the-cosmos.html?pagewanted=3|title=Science at work - page 3|newspaper=The New York Times | first=James | last=Glanz | date=20 April 1999 | accessdate=23 April 2010}}</ref> Oxford mathematical physicist [[Roger Penrose]] has described Ashtekar's approach to [[quantum gravity]] as "The most important of all the attempts at 'quantizing' general relativity."<ref>{{cite news|url=https://www.nytimes.com/1999/04/20/science/scientist-at-work-abhay-ashtekar-taste-testing-a-recipe-for-the-cosmos.html?pagewanted=1|title=Science at work - page 1|newspaper=The New York Times | first=James | last=Glanz | date=20 April 1999 | accessdate=23 April 2010}}</ref> Ashtekar was elected as Member to National Academy of Sciences in May 2016.<ref>{{Cite web |url=http://www.nasonline.org/news-and-multimedia/news/may-3-2016-NAS-Election.html# |title=Archived copy |access-date=4 May 2016 |archive-url=https://web.archive.org/web/20160506052951/http://www.nasonline.org/news-and-multimedia/news/may-3-2016-NAS-Election.html# |archive-date=6 May 2016 |url-status=dead |df=dmy-all }}</ref>
'''Abhay Vasant Ashtekar''' (born 5 July 1949) is an Indian theoretical physicist who created [[Ashtekar variables]] and is one of the founders of [[loop quantum gravity]] and its subfield [[loop quantum cosmology]].<ref>{{cite web | url=http://www.freepressjournal.in/world/indian-american-professor-abhay-ashtekar-wins-einstein-prize-7-facts-about-the-physicist/1378066 | title=Indian American professor Abhay Ashtekar wins Einstein prize, 7 facts about the physicist }}</ref> Ashtekar has also written a number of descriptions of loop quantum gravity that are accessible to non-physicists. He is an Evan Pugh Professor Emeritus of Physics and former Director of the Institute for Gravitational Physics and Geometry (now [[Institute for Gravitation and the Cosmos]])<ref>{{cite web|title=Institute for Gravitation and the Cosmos|url=https://igc.psu.edu|access-date=12 September 2024}}</ref> and [[Center for Fundamental Theory]]<ref>{{cite web|title=Center for Fundamental Theory|url=https://cft.igc.psu.edu|access-date=12 September 2024}}</ref> at [[Pennsylvania State University]].
In 1999, Ashtekar and his colleagues were able to calculate the [[entropy]] for a [[black hole]], matching a 1974 prediction by [[Stephen Hawking]].<ref>{{cite news|url=https://www.nytimes.com/1999/04/20/science/scientist-at-work-abhay-ashtekar-taste-testing-a-recipe-for-the-cosmos.html?pagewanted=3|title=Science at work - page 3|newspaper=The New York Times | first=James | last=Glanz | date=20 April 1999 | access-date=23 April 2010}}</ref> Oxford mathematical physicist [[Roger Penrose]] has described Ashtekar's approach to [[quantum gravity]] as "The most important of all the attempts at 'quantizing' general relativity."<ref>{{cite news|url=https://www.nytimes.com/1999/04/20/science/scientist-at-work-abhay-ashtekar-taste-testing-a-recipe-for-the-cosmos.html?pagewanted=1|title=Science at work - page 1|newspaper=The New York Times | first=James | last=Glanz | date=20 April 1999 | access-date=23 April 2010}}</ref> Ashtekar was elected as Member to National Academy of Sciences in May 2016.<ref>{{Cite web |url=http://www.nasonline.org/news-and-multimedia/news/may-3-2016-NAS-Election.html |title=May 3, 2016: NAS Members and Foreign Associates Elected |access-date=4 May 2016 |archive-url=https://web.archive.org/web/20160506052951/http://www.nasonline.org/news-and-multimedia/news/may-3-2016-NAS-Election.html |archive-date=6 May 2016 |url-status=dead |df=dmy-all }}</ref>


==Biography==
==Biography==
Abhay Ashtekar grew up in several cities, including [[Mumbai]], in the state of [[Maharashtra]], [[India]]. After completing his undergraduate education in India, Ashtekar enrolled in the graduate program for [[gravitation]] at the [[University of Texas at Austin]].<ref name="NYT2"/> He went on to complete his [[PhD]] at the [[University of Chicago]] under the supervision of [[Robert Geroch]] in 1978 and held several appointments at [[Oxford University|Oxford]], [[University of Paris|Paris]], [[Syracuse University|Syracuse]] before settling at [[Penn State]].<ref>{{cite web|url=http://gravity.psu.edu/people/Ashtekar/cv.html|title=Abhay Ashtekar - CV}}</ref>
Abhay Ashtekar grew up in several cities, including [[Mumbai]], in the state of [[Maharashtra]], India. After completing his undergraduate education in India, Ashtekar enrolled in the graduate program for [[gravitation]] at the [[University of Texas at Austin]].<ref name="NYT2"/> He went on to complete his [[PhD]] at the [[University of Chicago]] under the supervision of [[Robert Geroch]] in 1978 and held several appointments at [[University of Oxford|Oxford]], [[University of Paris|Paris]], [[Syracuse University|Syracuse]] before settling at [[Pennsylvania State University]].<ref>{{cite web|url=http://gravity.psu.edu/people/Ashtekar/cv.html|title=Abhay Ashtekar - CV}}</ref>


He married Christine Clarke in 1986<ref name="Rediff on the Net">{{cite web|url=http://www.rediff.com/news/1999/may/15us5.htm|title=Dr. Abhay Ashtekar|publisher=Rediff on the Net}}</ref> and the two have a son, Neil Ashtekar.
He married Christine Clarke in 1986<ref name="Rediff on the Net">{{cite web|url=http://www.rediff.com/news/1999/may/15us5.htm|title=Dr. Abhay Ashtekar|publisher=Rediff on the Net}}</ref> and the two have a son, Neil Ashtekar.


==Religious views==
==Religious views==
Abhay Ashtekar is an [[atheist]], though he enjoys reading on Indian and other eastern philosophy, namely the [[Tao]] and the [[Zen]] traditions. Furthermore, he believes to be inspired from the [[Bhagwat Gita]] as regards his attitude towards work.<ref name="Rediff on the Net"/>
Abhay Ashtekar is an [[atheist]], though he enjoys reading on Indian and other eastern philosophy, namely the [[Tao]] and the [[Zen]] traditions. Furthermore, he believes to be inspired from the [[Bhagavad Gita]] as regards his attitude towards work.<ref name="Rediff on the Net"/>


==Books==
==Books==
# A. Magnon and A. Ashtekar, Translation from French of Élie Cartan's work, "Sur les variétés à connexion affine et la théorie de la relativité généralisée" with a Commentary and Foreword by [[Andrzej Trautman|A. Trautman]], Bibliopolis, Naples, 1986, 199 pages.
# A. Magnon and A. Ashtekar, Translation from French of Élie Cartan's work, "Sur les variétés à connexion affine et la théorie de la relativité généralisée" with a commentary and foreword by [[Andrzej Trautman|A. Trautman]], Bibliopolis, Naples, 1986, 199 pages.
# A. Ashtekar, Asymptotic Quantization. Bibliopolis, Naples, 1987, 107 pages.
# A. Ashtekar, Asymptotic Quantization. Bibliopolis, Naples, 1987, 107 pages.
# A. Ashtekar, (with invited contributions) New Perspectives in Canonical Gravity. Bibliopolis, Naples, 1988, 324 pages.
# A. Ashtekar, (with invited contributions) New Perspectives in Canonical Gravity. Bibliopolis, Naples, 1988, 324 pages.
Line 49: Line 49:


==References==
==References==
{{reflist}}
<references/>


==External links==
==External links==
* [https://www.aip.org/history-programs/niels-bohr-library/oral-histories/45807 Oral History interview transcript for Abhay Ashtekar on 3 February 2021, American Institute of Physics, Niels Bohr Library and Archives]
* {{MathGenealogy |id=92486}}
* {{MathGenealogy |id=92486}}
* [http://cgpg.gravity.psu.edu/people/Ashtekar/index.html Abhay Ashtekar's homepage]
* [http://cgpg.gravity.psu.edu/people/Ashtekar/index.html Abhay Ashtekar's homepage] {{Webarchive|url=https://web.archive.org/web/20021223211043/http://cgpg.gravity.psu.edu/people/Ashtekar/index.html |date=23 December 2002 }}
* [https://arxiv.org/find/grp_physics/1/au:+ashtekar/0/1/0/all/0/1 Ashtekar's publication] on [[ArXiv]]
* [https://arxiv.org/find/grp_physics/1/au:+ashtekar/0/1/0/all/0/1 Ashtekar's publication] on [[ArXiv]]


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[[Category:Scientists from Maharashtra]]
[[Category:Scientists from Maharashtra]]
[[mr:अभय अष्टेकर]]
[[mr:अभय अष्टेकर]]
[[Category:American scientists of Asian descent]]

Latest revision as of 14:10, 12 September 2024

"Ashtekar" redirects here. For Ashtekar Surname, see Swakula Sali.

Abhay Vasant Ashtekar
Born (1949-07-05) 5 July 1949 (age 75)
Kolhapur, Maharashtra, India[1]
Alma materUniversity of Texas, Austin, University of Chicago
Known forAshtekar variables Quantum gravity
AwardsMember of National Academy of Sciences, first Gravity Prize by the Gravity Research Foundation, Massachusetts, Einstein Prize
Scientific career
FieldsTheoretical physics
InstitutionsPennsylvania State University
Doctoral advisorRobert Geroch

Abhay Vasant Ashtekar (born 5 July 1949) is an Indian theoretical physicist who created Ashtekar variables and is one of the founders of loop quantum gravity and its subfield loop quantum cosmology.[2] Ashtekar has also written a number of descriptions of loop quantum gravity that are accessible to non-physicists. He is an Evan Pugh Professor Emeritus of Physics and former Director of the Institute for Gravitational Physics and Geometry (now Institute for Gravitation and the Cosmos)[3] and Center for Fundamental Theory[4] at Pennsylvania State University.

In 1999, Ashtekar and his colleagues were able to calculate the entropy for a black hole, matching a 1974 prediction by Stephen Hawking.[5] Oxford mathematical physicist Roger Penrose has described Ashtekar's approach to quantum gravity as "The most important of all the attempts at 'quantizing' general relativity."[6] Ashtekar was elected as Member to National Academy of Sciences in May 2016.[7]

Biography

[edit]

Abhay Ashtekar grew up in several cities, including Mumbai, in the state of Maharashtra, India. After completing his undergraduate education in India, Ashtekar enrolled in the graduate program for gravitation at the University of Texas at Austin.[1] He went on to complete his PhD at the University of Chicago under the supervision of Robert Geroch in 1978 and held several appointments at Oxford, Paris, Syracuse before settling at Pennsylvania State University.[8]

He married Christine Clarke in 1986[9] and the two have a son, Neil Ashtekar.

Religious views

[edit]

Abhay Ashtekar is an atheist, though he enjoys reading on Indian and other eastern philosophy, namely the Tao and the Zen traditions. Furthermore, he believes to be inspired from the Bhagavad Gita as regards his attitude towards work.[9]

Books

[edit]
  1. A. Magnon and A. Ashtekar, Translation from French of Élie Cartan's work, "Sur les variétés à connexion affine et la théorie de la relativité généralisée" with a commentary and foreword by A. Trautman, Bibliopolis, Naples, 1986, 199 pages.
  2. A. Ashtekar, Asymptotic Quantization. Bibliopolis, Naples, 1987, 107 pages.
  3. A. Ashtekar, (with invited contributions) New Perspectives in Canonical Gravity. Bibliopolis, Naples, 1988, 324 pages.
  4. A. Ashtekar and J. Stachel, Editors; Conceptual Problems of Quantum Gravity. Proceedings of the 1988 Osgood Hill Conference (Birkhauser, N. Y., 1991), 602 pages.
  5. A. Ashtekar, Lectures on Non-perturbative Canonical Gravity, (Notes prepared in collaboration with R.S. Tate), (World Scientific Singapore, 1991), 334 pages.
  6. A. Ashtekar, R.C. Cohen, D. Howard, J. Renn, S. Sarkar and A. Shimony (Editors), Revisiting the Foundations of Relativistic Physics, Festschrift in honor of John Stachel, Boston Studies in Philosophy of Science, Volume 234, (Kluwer Academic, 2003).

See also

[edit]

References

[edit]
  1. ^ a b Glanz, James (20 April 1999). "Science at work - page 2". The New York Times. Retrieved 23 April 2010.
  2. ^ "Indian American professor Abhay Ashtekar wins Einstein prize, 7 facts about the physicist".
  3. ^ "Institute for Gravitation and the Cosmos". Retrieved 12 September 2024.
  4. ^ "Center for Fundamental Theory". Retrieved 12 September 2024.
  5. ^ Glanz, James (20 April 1999). "Science at work - page 3". The New York Times. Retrieved 23 April 2010.
  6. ^ Glanz, James (20 April 1999). "Science at work - page 1". The New York Times. Retrieved 23 April 2010.
  7. ^ "May 3, 2016: NAS Members and Foreign Associates Elected". Archived from the original on 6 May 2016. Retrieved 4 May 2016.
  8. ^ "Abhay Ashtekar - CV".
  9. ^ a b "Dr. Abhay Ashtekar". Rediff on the Net.
[edit]
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