Heat Distribution of Relativistic Brownian Motion

Paraguassú, Pedro V.; Morgado, Welles A. M.

doi:10.48550/arxiv.2105.11388

Cited by 1 publication

(1 citation statement)

References 45 publications

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“…In Dirac materials the strong spin-orbit coupling leads to modifications of the Boltzmann transport equations that accounts for additional contributions from the spin current [56,57]. In the context of classical stochastic thermodynamics, it has been shown that the restrictions imposed by the light cone lead to modified behavior for heat [58,59]. The same has been shown to be true for the work distribution in relativistic quantum systems [60].…”

Section: Introductionmentioning

confidence: 99%

Quantum Otto engines at relativistic energies

Myers,

Abah,

Deffner

2021

Preprint

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Relativistic quantum systems exhibit unique features not present at lower energies, such as the existence of both particles and antiparticles, and restrictions placed on the system dynamics due to the light cone. In order to understand what impact these relativistic phenomena have on the performance of quantum thermal machines we analyze a quantum Otto engine with a working medium of a relativistic particle in an oscillator potential evolving under Dirac or Klein-Gordon dynamics. We examine both the low-temperature, non-relativistic and high-temperature, relativistic limits of the dynamics and find that the relativistic engine operates with higher work output, but an effectively reduced compression ratio, leading to significantly smaller efficiency than its nonrelativistic counterpart. Using the framework of endoreversible thermodynamics we determine the efficiency at maximum power of the relativistic engine, and find it to be equivalent to the Curzon-Ahlborn efficiency.

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