Reference : Nature of heat in strongly coupled open quantum systems

	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/26110

Title :	Nature of heat in strongly coupled open quantum systems
Language :	-
Author, co-author :	Esposito, Massimiliano [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
	Ochoa, M. A. [Department of Chemistry and Biochemistry, University of California San Diego, Sand Diego, CA, United States]
	Galperin, M. [Department of Chemistry and Biochemistry, University of California San Diego, Sand Diego, CA, United States]
Publication date :	2015
Journal title :	Physical Review B - Condensed Matter and Materials Physics
Publisher :	American Physical Society
Volume :	92
Issue/season :	23
Peer reviewed :	Yes (verified by ORBilu)
Audience :	International
ISSN :	10980121
Abstract :	[en] We show that any heat definition expressed as an energy change in the reservoir energy plus any fraction of the system-reservoir interaction is not an exact differential when evaluated along reversible isothermal transformations, except when that fraction is zero. Even in that latter case the reversible heat divided by temperature, namely entropy, does not satisfy the third law of thermodynamics and diverges in the low temperature limit. These results are found within the framework of nonequilibrium Green functions (NEGF) using a single level quantum dot strongly coupled to fermionic reservoirs and subjected to a time-dependent protocol modulating the dot energy as well as the dot-reservoir coupling strength. © 2015 American Physical Society.
Permalink :	http://hdl.handle.net/10993/26110
DOI :	10.1103/PhysRevB.92.235440

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