Eliade Stefanescu - MICROSCOPIC COEFFICIENTS FOR THE QUANTUM MASTER EQUATION OF A FERMI SYSTEM

Version 1

      Publication Details (including relevant citation   information):

      International Journal of Modern Physics E 11 (2002) 119-130.

      Abstract:

      In a previous paper, we derived a master equation for fermions,   of Lindblad's form, with coefficients depending on microscopic   quantities. In this paper, we study the properties of the   dissipative coefficients taking into account the explicit   expressions of: (a) the matrix elements of the dissipative   potential, evaluated from the condition that, essentially, this   potential induces transitions among the system eigenstates   without significantly modifying these states, (b) the densities   of the environment states according to the Thomas–Fermi model,   and (c) the occupation probabilities of these states taken as a   Fermi–Dirac distribution. The matrix of these coefficients   correctly describes the system dynamics: (a) for a normal,   Fermi–Dirac distribution of the environment population, the   decays dominate the excitation processes; (b) for an inverted   (exotic) distribution of this population, specific to a   clustering state, the excitation processes are dominant.

      Address (URL): http://www.worldscinet.com/ijmpe/11/1102/S0218301302000739.html