A quantum kinetic equation for Fermi-systems including three-body correlations
Abstract
A single-time quantum transport equation, which includes effects beyond the quasiparticle approximation, is derived for Fermi-systems in the framework of non-equilibrium real-time Green's functions theory. Ternary correlations are incorporated in the kinetic description via a cluster expansion for the self-energies (e.g., the transport vertex and the width) truncated at the level of three-body scattering amplitudes. A finite temperature/density formulation of the three-body problem is given. Corresponding three-body equations reduce to the well-known Faddeev equations in the vacuum limit. In equilibrium the equation of state contains virial corrections proportional to the third quantum virial coefficient.
Cite
@article{arxiv.nucl-th/9712074,
title = {A quantum kinetic equation for Fermi-systems including three-body correlations},
author = {A. Sedrakian and G. Roepke},
journal= {arXiv preprint arXiv:nucl-th/9712074},
year = {2009}
}
Comments
25 pages, Revtex, 2 figures. Final version to be published in Annals of Physics (NY), with minor changes