Nonequilibrium critical dynamics of the three-dimensional gauge glass

F. ROMÁ; D. DOMÍNGUEZ

PHYSICAL REVIEW B - CONDENSED MATTER AND MATERIALS PHYSICS

The American Physical Society

Lugar: USA; Año: 2008 vol. 78 p. 184431 - 184436

0163-1829

We study the nonequilibrium aging behavior of the gauge glass model in three dimensions at the critical temperature. We perform Monte Carlo simulations with a Metropolis update, and correlation and response functions are calculated for different waiting times. We obtain a multiplicative aging scaling of the correlation and response functions, calculating the aging exponent b and the nonequilibrium autocorrelation decay exponent  lambda_c /z_c . We also analyze the fluctuation-dissipation relationship at the critical temperature, obtaining the critical fluctuation-dissipation ratio X_infinifo . By comparing our results with the aging scaling reported previously for a model of interacting flux lines in the vortex-glass regime, we found that the exponents for both models are very different.