Time evolution of observables out of thermal equilibrium
Abstract
Description
We propose a new approximation-technique to deal with the exact macroscopic integro-differential evolution equations of statistical systems which self-consistently accounts for dissipative effects. Concentrating on one and two point equal-time correlators, we develop the self-consistent method and apply it to a scalar field theory with quartic self-interaction. We derive the effective equations of motion and the corresponding macroscopic effective Hamiltonian. Non-locality in time appears in a natural way necessary to account for entropy generating processes.
8 pages two-column REVTEX, 1 postscript figure. Talk given at the 5th International Workshop on Thermal Field Theories and Their Applications, Regensburg, 10 - 14 August 1998, 1 reference added, small changes
8 pages two-column REVTEX, 1 postscript figure. Talk given at the 5th International Workshop on Thermal Field Theories and Their Applications, Regensburg, 10 - 14 August 1998, 1 reference added, small changes