Correspondence Between the Energy Equipartition Theorem in Classical Mechanics and its Phase-Space Formulation in Quantum Mechanics

Abstract

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 we know about the classical energy equipartition theorem and its possible counterpart in phase-space formulation in quantum mechanics based on the Wigner representation. Also, we show that in the high-temperature regime, the classical result is recovered.

References in corpus (4)

• Overview of the phase space formulation of quantum mechanics with application to quantum technologies
• Nonclassical phase-space trajectories for the damped harmonic quantum oscillator
• Quantum counterpart of energy equipartition theorem for fermionic systems
• Weyl-Wigner Representation of Canonical Equilibrium States