Quantum critical engine at finite temperatures

Revathy, B S; Mukherjee, Victor; Divakaran, Uma

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8708

Title:	Quantum critical engine at finite temperatures
Authors:	Revathy, B S Mukherjee, Victor Divakaran, Uma
Keywords:	Criticality Internal Combustion Engines Low Temperature Physics Phase Transition and Critical Phenomena Quantum Computing Thermoelectrics Stochastic Thermodynamics of Quantum Systems
Issue Date:	18-Jun-2024
Publisher:	The European Physical Journal B
Citation:	The European Physical Journal B, 2024, Vol. 97 (76), AR No. 76
Abstract:	We construct a quantum critical Otto engine that is powered by finite temperature baths. We show that the work output of the engine shows universal power law behavior that depends on the critical exponents of the working medium, as well as on the temperature of the cold bath. Furthermore, higher temperatures of the cold bath allows the engine to approach the limit of adiabatic operation for smaller values of the time period, while the corresponding power shows a maximum at an intermediate value of the cold bath temperature. These counterintuitive results stems from thermal excitations dominating the dynamics at higher temperatures.
Description:	Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)
URI:	http://hdl.handle.net/2289/8708
ISSN:	1434-6036
Alternative Location:	https://doi.org/10.48550/arXiv.2403.20172 https://inspirehep.net/literature/2772657 https://doi.org/10.1140/epjb/s10051-024-00721-4
Copyright:	© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, 2024
Appears in Collections:	Research Papers (TP)

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