Free energy of a crystal in the quantum domain with allowance for correlations

1980 ◽  
Vol 23 (7) ◽  
pp. 608-611
Author(s):  
P. N. Nikolaev
Keyword(s):  
Free Energy ◽  
Quantum Domain

scholarly journals Concepts of work in autonomous quantum heat engines

Quantum ◽  
2019 ◽  
Vol 3 ◽  
pp. 195 ◽  
Author(s):  
Wolfgang Niedenzu ◽  
Marcus Huber ◽  
Erez Boukobza
Keyword(s):  
Free Energy ◽  
Classical Limit ◽  
Entropy Change ◽  
Quantum Thermodynamics ◽  
Engine Efficiency ◽  
Heat Engines ◽  
Quantum Domain ◽  
Quantum Heat Engines ◽  
Non Equilibrium

One of the fundamental questions in quantum thermodynamics concerns the decomposition of energetic changes into heat and work. Contrary to classical engines, the entropy change of the piston cannot be neglected in the quantum domain. As a consequence, different concepts of work arise, depending on the desired task and the implied capabilities of the agent using the work generated by the engine. Each work quantifier---from ergotropy to non-equilibrium free energy---has well defined operational interpretations. We analyse these work quantifiers for a heat-pumped three-level maser and derive the respective engine efficiencies. In the classical limit of strong maser intensities the engine efficiency converges towards the Scovil--Schulz-DuBois maser efficiency, irrespective of the work quantifier.

Encultured minds, not error reduction minds

2020 ◽  
Vol 43 ◽  
Author(s):  
Robert Mirski ◽  
Mark H. Bickhard ◽  
David Eck ◽  
Arkadiusz Gut
Keyword(s):  
Free Energy ◽  
Error Reduction ◽  
Energy Principle ◽  
Free Energy Principle ◽  
Current Article

Abstract There are serious theoretical problems with the free-energy principle model, which are shown in the current article. We discuss the proposed model's inability to account for culturally emergent normativities, and point out the foundational issues that we claim this inability stems from.

On the free energy of a ferromagnet : anisotropy and rotation

1987 ◽  
Vol 48 (2) ◽  
pp. 169-171 ◽  
Author(s):  
G. Aubert ◽  
E. du Tremolet de Lacheisserie
Keyword(s):  
Free Energy

Smectic A-Smectic B interface : faceting and surface free energy measurement

1989 ◽  
Vol 50 (24) ◽  
pp. 3527-3534 ◽  
Author(s):  
P. Oswald ◽  
F. Melo ◽  
C. Germain
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Energy Measurement ◽  
Smectic A

ON THE FREE ENERGY OF VORTICES IN ROTATING He II

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-222-C6-223
Author(s):  
L. J. Campbell ◽  
R. Ziff
Keyword(s):  
Free Energy

Optimal approaches to manage power system decarbonation

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1447-1452
Author(s):  
Vincent Mazauric ◽  
Ariane Millot ◽  
Claude Le Pape-Gardeux ◽  
Nadia Maïzi
Keyword(s):  
Free Energy ◽  
Linear Programming ◽  
Phase Transitions ◽  
Power System ◽  
Energy System ◽  
Energy Sources ◽  
Low Carbon ◽  
Faraday’S Law ◽  
Optimal Description ◽  
Low Carbon Technologies

To overcome the negative environemental impact of the actual power system, an optimal description of quasi-static electromagnetics relying on a reversible interpretation of the Faraday’s law is given. Due to the overabundance of carbon-free energy sources, this description makes it possible to consider an evolution towards an energy system favoring low-carbon technologies. The management for changing is then explored through a simplified linear-programming problem and an analogy with phase transitions in physics is drawn.

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