We study nonequilibrium critical relaxation properties of systems with quenched extended defects, correlated in ${\varepsilon }_d$ dimensions and randomly distributed in the remaining $d-{\varepsilon }_d$ 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.

• Received 23 July 2003

DOI:https://doi.org/10.1103/PhysRevB.69.134301