Self-Consistent Approximations to Non-Equilibrium Many-Body Theory

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dc.creatorIvanov, Yu. B.
dc.creatorKnoll, J.
dc.creatorVoskresensky, D. N.
dc.date1998-07-13
dc.date.accessioned2026-07-07T11:09:49Z
dc.date.available2026-07-07T11:09:49Z
dc.descriptionWithin the non-equilibrium Green's function technique on the real time contour, the Phi-functional method of Baym is reviewed and generalized to arbitrary non-equilibrium many-particle systems. The scheme may be closed at any desired order in the number of loops or vertices of the generating functional. It defines effective theories, which provide a closed set of coupled classical field and Dyson equations, which are self-consistent, conserving and thermodynamically consistent. The approach permits to include unstable particles and therefore unifies the description of resonances with all other particles, which obtain a mass width by collisions, decays or creation processes in dense matter. The inclusion of classical fields enables the treatment of soft modes and phase instabilities. The method can be taken as a starting point for adequate and consistent quantum improvements of the in-medium rates in transport theories.
dc.description31 pages, Latex elsart-style
dc.identifierhttps://arxiv.org/abs/hep-ph/9807351
dc.identifierhttp://arxiv.org/abs/hep-ph/9807351
dc.identifierNucl.Phys.A657:413-445,1999
dc.identifierdoi:10.1016/S0375-9474(99)00313-9
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190599
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectStatistical Mechanics
dc.subjectNuclear Theory
dc.titleSelf-Consistent Approximations to Non-Equilibrium Many-Body Theory
dc.typetext

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