Dynamically Emergent Quantum Thermodynamics: Non-Markovian Otto Cycle
- URL: http://arxiv.org/abs/2308.09462v1
- Date: Fri, 18 Aug 2023 11:00:32 GMT
- Title: Dynamically Emergent Quantum Thermodynamics: Non-Markovian Otto Cycle
- Authors: Irene Ada Picatoste, Alessandra Colla and Heinz-Peter Breuer
- Abstract summary: We revisit the thermodynamic behavior of the quantum Otto cycle with a focus on memory effects and strong system-bath couplings.
Our investigation is based on an exact treatment of non-Markovianity by means of an exact quantum master equation.
- Score: 49.1574468325115
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Employing a recently developed approach to dynamically emergent quantum
thermodynamics, we revisit the thermodynamic behavior of the quantum Otto cycle
with a focus on memory effects and strong system-bath couplings. Our
investigation is based on an exact treatment of non-Markovianity by means of an
exact quantum master equation, modelling the dynamics through the Fano-Anderson
model featuring a peaked environmental spectral density. By comparing the
results to the standard Markovian case, we find that non-Markovian baths can
induce work transfer to the system, and identify specific parameter regions
which lead to enhanced work output and efficiency of the cycle. In particular,
we demonstrate that these improvements arise when the cycle operates in a
frequency interval which contains the peak of the spectral density. This can be
understood from an analysis of the renormalized frequencies emerging through
the system-baths couplings.
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