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arXiv · 2610.27948

Cooling more while dissipating less: anomalous tradeoffs from thermodynamic geometry

Andrea Canzio·Vasco Cavina·Salvatore Raia·Vito Vetrano·Matteo Scandi·Paolo Abiuso
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Abstract

We show that, starting from the same state, optimal driving can sometimes reach a colder (or hotter) target in the same amount of time while dissipating less energy, or equivalently dissipate the same amount of energy in a shorter time. We study this counterintuitive phenomenon in the slow-driving regime of an open quantum system, where we name it Near-Equilibrium Anomalous Tradeoff (NEAT). We establish necessary conditions for its occurrence and show its underlying geometric origin. While NEAT is reminiscent of the well-known Mpemba effect, the two phenomena are distinct in general. We demonstrate NEAT in an exactly solvable qutrit model, as well as for d-dimensional birth-death dynamics with independently controlled energy levels. Finally, we show how NEAT can improve the performance of Carnot engines.

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Andrea Canzio, Vasco Cavina, Salvatore Raia, Vito Vetrano, Matteo Scandi, Paolo Abiuso. 2026-10-20. Cooling more while dissipating less: anomalous tradeoffs from thermodynamic geometry. https://arxiv.org/abs/2610.27948

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