Edwards-Anderson spin glasses undergo simple cumulative aging

TL;DR

This paper demonstrates that in numerical simulations of 3D and 4D Ising and Heisenberg spin glasses, aging, rejuvenation, and memory effects are all cumulative, contrasting with experimental observations.

Contribution

It introduces a quantitative method for analyzing temperature cycling experiments and shows that aging effects are inherently cumulative in these models.

Findings

Aging in simulated spin glasses is always cumulative.

Rejuvenation and memory effects are also cumulative in the models.

Results differ from experimental behaviors of real spin glass materials.

Abstract

We study and discuss rejuvenation and memory (numerical) experiments in Ising and Heisenberg three and four dimensional spin glasses. We introduce a quantitative procedure to analyze the results of temperature cycling experiments. We also run, compare and discuss ``twin'' couples of experiments. We find that in our systems aging is always cumulative in nature, and rejuvenation and memory effects are also cumulative: they are very different from the ones observed in experiments on spin glass materials.