Quantum Dissipation

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 diffus...

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Veröffentlicht in:arXiv.org 1995-07
Hauptverfasser: Bulgac, Aurel, Giu Do Dang, Kusnezov, Dimitri
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:2331-8422