Universal amplitudes ratios for critical aging via functional renormalization group
Statistical Mechanics
2022-06-22 v1
Abstract
We discuss how to calculate non-equilibrium universal amplitude ratios in the functional renormalization group approach, extending its applicability. In particular, we focus on the critical relaxation of the Ising model with non-conserved dynamics (model A) and calculate the universal amplitude ratio associated with the fluctuation-dissipation ratio of the order parameter, considering a critical quench from a high-temperature initial condition. Our predictions turn out to be in good agreement with previous perturbative renormalization-group calculations and Monte Carlo simulations.
Cite
@article{arxiv.2112.03015,
title = {Universal amplitudes ratios for critical aging via functional renormalization group},
author = {Michele Vodret and Alessio Chiocchetta and Andrea Gambassi},
journal= {arXiv preprint arXiv:2112.03015},
year = {2022}
}