Nonequilibrium critical relaxation in the presence of extended defects

Abstract

We study nonequilibrium critical relaxation properties of systems with quenched extended defects, correlated in ${\epsilon }_d$ dimensions and randomly distributed in the remaining $d-{\epsilon }_d$ dimensions. Using a field-theoretic renormalization-group approach, we find the scaling behavior of the nonequilibrium response and correlation functions and calculate the initial slip exponents $\theta$ and ${\theta }^{\prime }$, which describe the growth of correlations during the initial stage of the critical relaxation, in the two-loop approximation.

9 pages, 1 figure, revtex4

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