COMPARISON OF THE BRILLOUIN-WIGNER COUPLED-CLUSTER THEORY WITH THE STANDARD COUPLED-CLUSTER THEORY - CANCELLATION OF DISCONNECTED TERMS IN THE BRILLOUIN-WIGNER COUPLED-CLUSTER THEORY

Authors
MASIK J HUBAC I
Citation
J. Masik et I. Hubac, COMPARISON OF THE BRILLOUIN-WIGNER COUPLED-CLUSTER THEORY WITH THE STANDARD COUPLED-CLUSTER THEORY - CANCELLATION OF DISCONNECTED TERMS IN THE BRILLOUIN-WIGNER COUPLED-CLUSTER THEORY, Collection of Czechoslovak Chemical Communications, 62(6), 1997, pp. 829-842
Citations number
26
Categorie Soggetti
Chemistry
Journal title
Collection of Czechoslovak Chemical Communications → ACNP
ISSN journal
00100765
Volume
62
Issue
6
Year of publication
1997
Pages
829 - 842
Database
ISI
SICI code
0010-0765(1997)62:6<829:COTBCT>2.0.ZU;2-F
Abstract
In our article (Hubac I., Neogrady P.: Phys. Rev. A 50, 4558 (1994)) w e have developed size-extensive Brillouin-Wigner coupled cluster (BWCC ) theory. We have shown that the BWCC theory is fully equivalent to th e standard coupled cluster theory. However, the BWCC theory does not o bey the so-called linked cluster theorem. In this article we discuss t he cancellation of disconnected terms in the BWCC theory.