Results 91 to 100 of about 3,226,193 (375)
Isolated Quantum Heat Engine [PDF]
Physical Review Letters, 2012 4 pages, 4 ...
David W. Hallwood, O. Fialko
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Conical holographic heat engines [PDF]
Classical and Quantum Gravity, 2019 We demonstrate that adding a conical deficit to a black hole holographic heat engine increases its efficiency; in contrast, allowing a black hole to accelerate {\it decreases} efficiency if the same average conical deficit is maintained. Adding other charges to the black hole does not change this qualitative effect.
Wasif Ahmed +4 more
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Holographic heat engine within the framework of massive gravity
Journal of High Energy Physics, 2018 Heat engine models are constructed within the framework of massive gravity in this paper. For the four-dimensional charged black holes in massive gravity, it is shown that the existence of graviton mass improves the heat engine efficiency significantly ...
Jie-Xiong Mo, Gu-Qiang Li
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Experimental demonstration of quantum effects in the operation of microscopic heat engines
, 2018 The heat engine, a machine that extracts useful work from thermal sources, is one of the basic theoretical constructs and fundamental applications of classical thermodynamics.
Becker, Jonas N. +9 more
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Irreversible efficiency and Carnot theorem for heat engines operating with multiple heat baths in linear response regime [PDF]
arXiv, 2022 The Carnot theorem, one expression of the second law of thermodynamics, places a fundamental upper bound on the efficiency of heat engines operating between two heat baths. The Carnot theorem can be stated in a more generalized form for heat engines operating with multiple heat baths, where the maximum efficiency is achieved for reversible heat engines
arxiv
An out-of-equilibrium non-Markovian quantum heat engine [PDF]
Quantum Science and Technology, 2018 We study the performance of a quantum Otto cycle using a harmonic work medium and undergoing collisional dynamics with finite-size reservoirs. We span the dynamical regimes of the work strokes from strongly non-adiabatic to quasi-static conditions, and ...
M. Pezzutto, M. Paternostro, Y. Omar
semanticscholar +1 more source
Algorithmic quantum heat engines [PDF]
Physical Review E, 2019 We suggest alternative quantum Otto engines, using heat bath algorithmic cooling with a partner pairing algorithm instead of isochoric cooling and using quantum swap operations instead of quantum adiabatic processes. Liquid state nuclear magnetic resonance systems in a single entropy sink are treated as working fluids.
Emre Köse +4 more
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Stochastic energetics of a Brownian motor and refrigerator driven by non-uniform temperature
, 2014 The energetics of a Brownian heat engine and heat pump driven by position dependent temperature, known as the B\"uttiker-Landauer heat engine and heat pump, is investigated by numerical simulations of the inertial Langevin equation. We identify parameter
Feynman R. P. +5 more
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THE EFFECTIVENESS OF INNOVATIVE TECHNOLOGIES FOR ENERGY SUPPLY OF GREENHOSES
RUDN Journal of Engineering Research, 2017 Greenhouse industry around the world is actively introducing innovative technology. The suggested way to improve the cost efficiency of greenhouses is to use power supply systems, including heat pumps.
I K Shatalov, I I Shatalova
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Quantum Optomechanical Heat Engine [PDF]
Physical Review Letters, 2014 We investigate theoretically a quantum optomechanical realization of a heat engine. In a generic optomechanical arrangement the optomechanical coupling between the cavity field and the oscillating end-mirror results in polariton normal mode excitations whose character depends on the pump detuning and the coupling strength.
Pierre Meystre +2 more
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