Coupled cluster approach to the single‐particle Green's function | Zendy

Nooijen Marcel | Zendy; Snijders Jaap G. | Zendy

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Coupled cluster approach to the single‐particle Green's function

Author(s) -

Nooijen Marcel,

Snijders Jaap G.

Publication year - 1992

Publication title -

international journal of quantum chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.484

H-Index - 105

eISSN - 1097-461X

pISSN - 0020-7608

DOI - 10.1002/qua.560440808

Subject(s) - diagrammatic reasoning , cluster (spacecraft) , coupled cluster , function (biology) , particle (ecology) , physics , green's function , statistical physics , mathematical physics , quantum mechanics , computer science , molecule , oceanography , evolutionary biology , biology , programming language , geology

Diagrammatic and Coupled Cluster techniques are used to develop an approach to the single‐particle Green's function G which concentrates on G directly rather than first approximating the irreducible self‐energy and then solving Dyson's equation. As a consequence the ionization and attachment parts of the Green's function satisfy completely decoupled sets of equations. The proposed Coupled Cluster Green's Function method ( CCGF ) is intimately connected to both Coupled Cluster Linear Response Theory ( CCLRT ) and the Normal Coupled Cluster Method ( NCCM ). These relations are discussed in detail. © 1992 John Wiley & Sons, Inc.

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