Geometric phaselike effects in a quantum heat engine

Giri, Sajal Kumar; Goswami, Himangshu Prabal

doi:10.1103/PhysRevE.96.052129

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Geometric phaselike effects in a quantum heat engine

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Giri, Sajal Kumar
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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Goswami, Himangshu Prabal
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

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https://journals.aps.org/pre/abstract/10.1103/PhysRevE.96.052129
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Citation

Giri, S. K., & Goswami, H. P. (2017). Geometric phaselike effects in a quantum heat engine. Physical Review E, 96(5): 052129. doi:10.1103/PhysRevE.96.052129.

Cite as: https://hdl.handle.net/21.11116/0000-0000-8156-D

Abstract

By periodically driving the temperature of reservoirs in a quantum heat engine, geometric or Pancharatnam-Berry phaselike (PBp) effects in the thermodynamics can be observed. The PBp can be identified from a generating function (GF) method within an adiabatic quantum Markovian master equation formalism. The GF is shown not to lead to a standard open quantum system's fluctuation theorem in the presence of phase-different modulations with an inapplicability in the use of large deviation theory. Effect of quantum coherences in optimizing the flux is nullified due to PBp contributions. The linear coefficient, 1/2, which is universal in the expansion of the efficiency at maximum power in terms of Carnot efficiency no longer holds true in the presence of PBp effects.