Quantum Dissipation

Details Quantum Dissipation Quantum Dissipation

1995-07-21

arxiv.org/abs/nucl-th/9507034v1

Physics

Nuclear Physics

Nuclear Theory

11 pages (Latex), 3 figures (uuencoded postscript)

Scientific paper

We address the question of the microscopic origin of dissipation in collective motion of a quantum many--body system in the framework of a parametric random matrix approach to the intrinsic dynamics. We show that the fluctuation--dissipation theorem is generally violated and, moreover, energy diffusion has a markedly non--Gaussian character and the corresponding distribution has very long tails. Such features do not support a Langevin or Fokker--Planck approach to dissipation in collective nuclear motion.

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