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- aggregation classification "A1".
- aggregation creator person.
- aggregation date "2013".
- aggregation format "application/pdf".
- aggregation hasFormat 3223276.bibtex.
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- aggregation isPartOf urn:issn:1951-6355.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Physics and Astronomy".
- aggregation title "Faddeev random phase approximation applied to molecules".
- aggregation abstract "The Faddeev Random Phase Approximation (FRPA) is a Green’s function method which couples collective degrees of freedom to the single particle motion by resumming an infinite number of Feynman diagrams. The Faddeev technique is applied to describe the two-particle-one-hole (2p1h) and two-hole-one-particle (2h1p) Green’s function in terms of non-interacting propagators and kernels for the particle-particle (pp) and particle-hole (ph) interactions. This results in an equal treatment of the intermediary pp and ph channels. In FRPA both the pp and ph phonons are calculated on the random phase approximation (RPA) level. In this work the equations that lead to the FRPA eigenvalue problem are derived. The method is then applied to atoms, small molecules and the Hubbard model, for which the ground state energy and the ionization energies are calculated. Special attention is directed to the RPA instability in the dissociation limit of diatomic molecules and in the Hubbard model. Several solutions are proposed to overcome this problem.".
- aggregation authorList BK977425.
- aggregation endPage "70".
- aggregation issue "1".
- aggregation startPage "1".
- aggregation volume "218".
- aggregation aggregates 3223277.
- aggregation isDescribedBy 3223276.
- aggregation similarTo e2013-01772-8.
- aggregation similarTo LU-3223276.