Nonequlibrium Green-function-based resonance system (7 pages)

Jamal T. Manassah, Henry M. Foley

Th. Bornath, D. Kremp, M. Schlanges

The 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.

Dmitry A. Ryndyk

CHANG SHIH-CHUN

摘要 本文从解析性的讨论出发,应用朗道关系改进Дзялошинский的图解法,建立了双时因果格林函数的费曼图解法,它具有正确的零温权限,并可直接用来计算各种非平衡过程的动力学性质。 Abstract Starting from the discussion of analytic properties and using the Landau relation to improve the diagrammatic technique of Dzyaloshinskii, the Feynman diagrammatic technique for double time dependent causal Green's function is established. There is a correct limit of zero temperature and may be used to calculate the various dynamical properties of nonequlibrium processes. 作者及机构信息 章思俊 1. 中国科学院 Authors and contacts CHANG SHIH-CHUN 1. 中国科学院 参考文献 [1] 施引文献

Jaime Merino, A. Levy Yeyati

Yoshiki Kuramoto

Yoshiki Kuramoto; On the Green Function Theory of Stanley-Kaplan Phase Transition, Progress of Theoretical Physics, Volume 46, Issue 4, 1 October 1971, Pages 12