PSI (computational chemistry): Difference between revisions
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'''PSI''' is an [[Ab initio quantum chemistry methods|ab initio]] [[computational chemistry]] package originally written by the research group of [[Henry F. Schaefer, III]] ([[University of Georgia]]). It performs high-accuracy quantum computations on small to medium-sized [[molecule]]s. |
'''PSI''' is an [[Ab initio quantum chemistry methods|ab initio]] [[computational chemistry]] package originally written by the research group of [[Henry F. Schaefer, III]] ([[University of Georgia]]). It performs high-accuracy quantum computations on small to medium-sized [[molecule]]s. |
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'''PSI4''' is the latest release of the program package - it is [[open source]], released as [[free software|free]] under the [[GNU General Public License|GPL]] through [[SourceForge]]. Primary development is currently conducted by Daniel Crawford ([[Virginia Tech]]), David Sherrill ([[Georgia Tech]]), Edward Valeev ([[Virginia Tech]]), and Rollin King ([[Bethel University]]). |
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==Features== |
==Features== |
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==External links== |
==External links== |
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*[http://www.psicode.org |
*[http://www.psicode.org PSI4 Homepage] |
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Revision as of 18:11, 10 May 2012
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 | The topic of this article may not meet Wikipedia's general notability guideline. (April 2011) |
PSI is an ab initio computational chemistry package originally written by the research group of Henry F. Schaefer, III (University of Georgia). It performs high-accuracy quantum computations on small to medium-sized molecules.
PSI4 is the latest release of the program package - it is open source, released as free under the GPL through SourceForge. Primary development is currently conducted by Daniel Crawford (Virginia Tech), David Sherrill (Georgia Tech), Edward Valeev (Virginia Tech), and Rollin King (Bethel University).
Features
The basic capabilities of PSI are concentrated around the following methods of quantum chemistry:
Several methods are available for computing excited electronic states, including configuration interaction singles (CIS), the random phase approximation (RPA), and equation-of-motion coupled cluster (EOM-CCSD). PSI3 also includes the explicitly-correlated MP2-R12 method and the ability to compute the Born-Oppenheimer diagonal correction using configuration interaction wavefunctions.
See also
External links
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