The dynamics of a thermal non-equilibrium anharmonic oscillator

Details The dynamics of a thermal non-equilibrium anharmonic oscillator The dynamics of a thermal non-equilibrium anharmonic oscillator

1995-09-15

arxiv.org/abs/hep-ph/9509302v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, REVTeX, no figures

Scientific paper

We propose an non-standard method to calculate non-equilibrium physical observables. Considering the generic example of an anharmonic quantum oscillator, we take advantage of the fact that the commutator algebra of second order polynomials in creation/annihilation operators closes. We solve the von~Neumann equation for the density-operator exactly in the mean field approximation and study the time evolution of the particle number and the expectation value < X^2 > .

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