Anomalous heating in a colloidal system
Statistical Mechanics
2022-01-28 v1
Abstract
We report anomalous heating in a colloidal system, the first observation of the inverse Mpemba effect, where an initially cold system heats up faster than an identical warm system coupled to the same thermal bath. For an overdamped, Brownian colloidal particle moving in a tilted double-well potential, we find a non-monotonic dependence of the heating times on the initial temperature of the system, as predicted by an eigenfunction expansion of the associated Fokker-Planck equation. By carefully tuning parameters, we also observe a "strong" version of anomalous heating, where a cold system heats up exponentially faster than systems prepared under slightly different conditions
Keywords
Cite
@article{arxiv.2104.12899,
title = {Anomalous heating in a colloidal system},
author = {Avinash Kumar and Raphael Chetrite and John Bechhoefer},
journal= {arXiv preprint arXiv:2104.12899},
year = {2022}
}
Comments
8 pages, 7 figures