Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 116, Issue 15, Pages 6397-6410Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1461814
Keywords
-
Ask authors/readers for more resources
In explicitly correlated Moller-Plesset (MP2-R12) methods, the first-order wave function is expanded not only in terms of products of one-electron functions-that is, orbitals-but also in terms of two-electron functions that depend linearly on the interelectronic coordinates r(ij). With these functions, three- and four-electron integrals occur, but these integrals can be avoided by inserting a resolution of the identity (RI) in terms of the one-electron basis. In previous work, only one single basis was used for both the electronic wave function and the RI approximation. In the present work, a new computational approach is developed that uses an auxiliary basis set to represent the RI. This auxiliary basis makes it possible to employ standard basis sets in explicitly correlated MP2-R12 calculations. (C) 2002 American Institute of Physics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available