Properties of isolated systems in external fields.
We investigate evolution of an isolated system in an external field, and compare the ensemble averages of the response on successive constant internal energy surfaces to the ensemble averages of steady-state responses constrained to the same energy. We find that the two ensemble averages converge for sufficiently high energies, irrespective of the field strength and the initial energy from which the adiabatic evolution starts. This rule is satisfied for any phase-space distribution on the initial energy surface that can relax to equilibrium. At sufficiently high energies transport coefficients converge to their equilibrium values, because the effect of a constant field on the behavior of a system decreases with its temperature.
Petravic
Janka
J
Research School of Chemistry, The Australian National University, Canberra ACT 0200, Australia.