Response Functions in Phase Ordering Kinetics

TL;DR

This paper investigates response functions in phase ordering kinetics using perturbation theory, confirming zeroth-order Gaussian results and showing second-order corrections alter nonequilibrium exponents but keep them equal.

Contribution

It extends previous Gaussian theory by calculating second-order corrections to response functions and exponents in phase ordering kinetics.

Findings

Zeroth-order results match Gaussian theory.

Second-order corrections modify nonequilibrium exponents.

Exponents mbda and mbda_{R} remain equal at second order.

Abstract

We discuss the behavior of response functions in phase ordering kinetics within the perturbation theory approach developed earlier. At zeroth order the results agree with previous gaussian theory calculations. At second order the nonequilibrium exponents \lambda and \lambda_{R} are changed but remain equal.