Prethermal inverse Mpemba effect

Koudai Sugimoto; Tomotaka Kuwahara; Keiji Saito

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arXiv · 2507.04669

Prethermal inverse Mpemba effect

Koudai Sugimoto·Tomotaka Kuwahara·Keiji Saito

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Abstract

The inverse Mpemba effect is a counterintuitive phenomenon in which a system, initially in thermal equilibrium and prepared at different temperatures below that of the final equilibrium state, relaxes to the final state more rapidly when starting from a lower initial temperature. We extend this concept to the relaxation toward a prethermal state in isolated quantum systems. By examining a simple model that exhibits prethermalization, we demonstrate that this effect indeed manifests under periodic driving. We further discuss the realization of this phenomenon in a variety of systems within a unified theoretical framework.

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Koudai Sugimoto, Tomotaka Kuwahara, Keiji Saito. 2025-07-07. Prethermal inverse Mpemba effect. https://arxiv.org/abs/2507.04669

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