The two-particle problem in a many-particle system: I. Dynamically screened ladder approximation

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dc.creatorBornath, Th.
dc.creatorKremp, D.
dc.creatorSchlanges, M.
dc.date1999-03-25
dc.date.accessioned2026-07-07T05:56:50Z
dc.date.available2026-07-07T05:56:50Z
dc.descriptionThe two-particle problem within a nonequilibrium many-particle system is investigated in the framework of real-time Green's functions. Starting from the dynamically screened ladder approximation of the nonequlibrium Bethe-Salpeter equation, a nonequilibrium Dyson equation is given for two-time two-particle Green's functions. Thereby the well-known Kadanoff-Baym equations are generalized to the case of two-particle functions. The two-time structure of the equations is achieved in an exact way avoiding the so-called Shindo approximation. For the case of thermodynamic equilibrium, the differences to former results obtained for the effective two-particle hamiltonian are discussed.
dc.description24 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/physics/9903039
dc.identifierhttp://arxiv.org/abs/physics/9903039
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/87763
dc.subjectPlasma Physics
dc.titleThe two-particle problem in a many-particle system: I. Dynamically screened ladder approximation
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