Kinetic equations within the formalism of non-equilibrium thermo field dynamics

Toshihico Arimitsu

Physica A: Statistical Mechanics and its Applications, 1988, vol. 148, issue 3, 427-455

Abstract: After reviewing the real-time formalism of dissipative quantum field theory, i.e. non-equilibrium thermo field dynamics (NETFD), a kinetic equation, a self-consistent equation for the dissipation coefficient and a “mass” or “chemical potential” renormalization equation for non-equilibrium transient situations are extracted out of the two-point Green's function of the Heisenberg field, in their most general forms upon the basic requirements of NETFD. The formulation is applied to the electron-phonon system, as an example, where the gradient expansion and the quasi-particle approximation are performed. The formalism of NETFD is reinvestigated in connection with the kinetic equations.

Date: 1988
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:148:y:1988:i:3:p:427-455

DOI: 10.1016/0378-4371(88)90082-9

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