Aging without disorder on long time scales

TL;DR

This paper investigates aging phenomena in a disorder-free spin system exhibiting glassy dynamics at low temperatures, using an efficient algorithm to analyze trapping times and aging effects.

Contribution

It demonstrates the presence of aging in a simple, disorder-free spin system and links aging to the distribution of trapping times, using an efficient simulation method.

Findings

Evidence of aging effects at low temperatures.

A link between aging and trapping time distribution.

Efficient simulation method for glassy dynamics.

Abstract

We study the Metropolis dynamics of a simple spin system without disorder, which exhibits glassy dynamics at low temperatures. We use an implementation of the algorithm of Bortz, Kalos and Lebowitz \cite{bortz}. This method turns out to be very efficient for the study of glassy systems, which get trapped in local minima on many different time scales. We find strong evidence of aging effects at low temperatures. We relate these effects to the distribution function of the trapping times of single configurations.