Correspondence between the Energy Equipartition Theorem in Classical Mechanics and Its Phase-Space Formulation in Quantum Mechanics.

Entropy (Basel)

Instituto de Física, Universidad de Antioquia, Calle 70 No. 52-21, Medellín 050010, Colombia.

Published: June 2023

In classical physics, there is a well-known theorem in which it is established that the energy per degree of freedom is the same. However, in quantum mechanics, due to the non-commutativity of some pairs of observables and the possibility of having non-Markovian dynamics, the energy is not equally distributed. We propose a correspondence between what is known as the classical energy equipartition theorem and its counterpart in the phase-space formulation in quantum mechanics based on the Wigner representation. Further, we show that in the high-temperature regime, the classical result is recovered.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10297705PMC
http://dx.doi.org/10.3390/e25060939DOI Listing

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