Thermodynamic Geometry of Microscopic Heat Engines

Tutkimustuotos: Lehtiartikkelivertaisarvioitu

Tutkijat

  • Kay Brandner
  • Keiji Saito

Organisaatiot

  • Keio University

Kuvaus

We develop a general framework to describe the thermodynamics of microscopic heat engines driven by arbitrary periodic temperature variations and modulations of a mechanical control parameter. Within the slow-driving regime, our approach leads to a universal trade-off relation between efficiency and power, which follows solely from geometric arguments and holds for any thermodynamically consistent microdynamics. Focusing on Lindblad dynamics, we derive a second bound showing that coherence as a genuine quantum effect inevitably reduces the performance of slow engine cycles regardless of the driving amplitudes. To show how our theory can be applied in practice, we work out a specific example, which lies within the range of current solid-state technologies.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivumäärä7
JulkaisuPhysical Review Letters
Vuosikerta124
Numero4
TilaJulkaistu - 31 tammikuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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