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X-WR-CALDESC:Events for Modern Trends in Physics Research
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DTSTART:20220327T010000
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DTSTART;TZID=Europe/Warsaw:20220615T130000
DTEND;TZID=Europe/Warsaw:20220615T140000
DTSTAMP:20240806T181736
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SUMMARY:Quantum counterpart of classical equipartition of energy
DESCRIPTION:\n\n\nSpeaker: Prof. Jerzy ŁuczkaAffiliation: Institute of Physics\, University of Silesia in KatowiceLink to MS Teams meeting \n\n\n\n\n\nIn classical statistical physics\, the theorem on equipartition of kinetic energy is one of the most universal relation. It states that for a system in thermodynamic equilibrium of temperature T\, the mean kinetic energy Ek per one degree of freedom is equal to Ek=kBT/2\, where kB is the Boltzmann constant. On the contrary\, for quantum systems\, the mean kinetic energy is not equally shared among all degrees of freedom and the theorem fails. The quite natural question arises whether one can formulate a similar and universal theorem for the mean kinetic energy of quantum systems at the thermodynamic equilibrium state. Recently\, the quantum analogue of the classical energy equipartition theorem has been proved in a general case. The proof is based on the fluctuation-dissipation relation of the Callen-Welton type. The quantum analogue is also universal in the sense that it holds true for all quantum systems which are composed of an arbitrary number of non-interacting or interacting particles\, subjected to any confining potentials and coupled to thermostat with arbitrary coupling strength (from weak-coupling to strong coupling regimes) as well as for arbitrary temperatures. \n\n\n\nChairman: Prof. Jarosław W. Kłos \n
URL:https://mtpr.amu.edu.pl/event/quantum-counterpart-of-classical-equipartition/
CATEGORIES:Faculty Colloquia
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