Faddeev Random Phase Approximation for Molecules

Details Faddeev Random Phase Approximation for Molecules Faddeev Random Phase Approximation for Molecules

2010-10-06

arxiv.org/abs/1010.1090v1

Physics

Computational Physics

Scientific paper

The Faddeev Random Phase Approximation is a Green's function technique that makes use of Faddeev-equations to couple the motion of a single electron to the two-particle--one-hole and two-hole--one-particle excitations. This method goes beyond the frequently used third-order Algebraic Diagrammatic Construction method: all diagrams involving the exchange of phonons in the particle-hole and particle-particle channel are retained, but the phonons are described at the level of the Random Phase Approximation. This paper presents the first results for diatomic molecules at equilibrium geometry. The behavior of the method in the dissociation limit is also investigated.

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