Ak. Rajagopal et Fa. Buot, QUANTUM TRANSPORT AND NONLINEAR DYNAMICS OF INTERACTING QUANTIZED-FIELDS AND APPLICATIONS TO NANOELECTRONICS AND OPTOELECTRONICS, Materials science & engineering. B, Solid-state materials for advanced technology, 35(1-3), 1995, pp. 51-55
A non-equilibrium dynamics of interacting quantized fields based on th
e Liouville space quantum field dynamics is outlined here. The self-co
nsistent treatment of quantum transport given here expresses the theor
y in terms of renormalized propagators and renormalized many-body inte
ractions. The quantum transport equation for the particle quantum dist
ribution function is extracted from the general equation in real time
for each particle species in a system consisting of several components
. Although it is equivalent to the so-called non-equilibrium Green's f
unction theory of Schwinger and Keldysh, it has several technical adva
ntages. We suggest a method to implement numerically the self-consiste
nt scheme by generalizing the many-body functional methods (e.g. the d
ensity functional techniques) in condensed matter physics to highly no
n-equilibrium situations. Several important problems in nanoelectronic
s and optoelectronics where this formalism is essential are mentioned.