Wigner functions of essentially nonequilibrium systems

被引:0
|
作者
Manjavidze, J [1 ]
机构
[1] Georgian Acad Sci, Inst Phys, GE-380077 Tbilisi, Georgia
关键词
D O I
10.1134/1.953097
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We discuss the S-matrix interpretation of perturbation theory for the Wigner-function generating functional at finite temperature. For the sake of definiteness the concrete particle-physics problem of high-temperature initial-state dissipation into a cold state is considered from the experimental and theoretical points of view. The temperature is introduced in the theory in a typical microcanonical way. The perturbation theory contains two-temperature (of the initial and final states) Green functions. Two possible boundary conditions are considered. One of them is the usual one in a field-theory vacuum boundary condition. The corresponding generating functional of the Wigner functions can be used in particle physics. Another type of boundary condition assumes that the system under consideration is in the environment of black-body radiation. This leads to the usual Kubo-Martin-Schwinger boundary condition in the equilibrium (one-temperature) limit. The comparisons of the S-matrix approach with Schwinger-Keldysh real-time finite-temperature field theory and with the nonstationary statistical-operator approach of Zubarev are considered. The range of applicability of the finite-temperature description of dissipation processes is shown. (C) 1999 American Institute of Physics. [S1063-7796(99)00301-0].
引用
收藏
页码:49 / 65
页数:17
相关论文
共 50 条
  • [31] Diffraction of Wigner functions
    Creagh, Stephen C.
    Sieber, Martin
    Gradoni, Gabriele
    Tanner, Gregor
    JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 2021, 54 (01)
  • [32] Wigner functions on a lattice
    Takami, A.
    Hashimoto, T.
    Horibe, M.
    Hayashi, A.
    Physical Review A. Atomic, Molecular, and Optical Physics, 2001, 64 (03): : 1 - 032114
  • [33] Essentially disconnected character of essentially disconnected coronoid systems
    Wei, SL
    Si, CR
    MATCH-COMMUNICATIONS IN MATHEMATICAL AND IN COMPUTER CHEMISTRY, 2005, 54 (01) : 153 - 162
  • [34] Wigner distribution functions for complex dynamical systems: A path integral approach
    Sels, Dries
    Brosens, Fons
    Magnus, Wim
    PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 2013, 392 (02) : 326 - 335
  • [35] Boltzmann-Green functions for nonequilibrium fluctuations in metallic systems
    Green, F
    PHYSICAL REVIEW B, 1996, 54 (07): : 4394 - 4396
  • [36] Spectral and entropic characterizations of Wigner functions: Applications to model vibrational systems
    Luzanov, A. V.
    JOURNAL OF CHEMICAL PHYSICS, 2008, 129 (09):
  • [37] Dynamics of the Wigner and Weyl functions for open quantum systems with quadratic hamiltonians
    Kupsch, I
    Smolyanov, OG
    DOKLADY MATHEMATICS, 2005, 72 (02) : 747 - 751
  • [38] Exact results for nonequilibrium dynamics in Wigner phase space
    Bencheikh, K.
    Nieto, L. M.
    PHYSICS LETTERS A, 2020, 384 (25)
  • [39] Wigner-path approach to nonequilibrium quantum transport
    Jacoboni, C
    Bordone, P
    Brunetti, R
    Proceedings of the Conference Progress in Nonequilibrium Green's Functions II, 2003, : 464 - 471
  • [40] Distribution functions in quantum mechanics and Wigner functions
    Kuz'menkov, LS
    Maksimov, SG
    THEORETICAL AND MATHEMATICAL PHYSICS, 2002, 131 (02) : 641 - 650