2002/11/18 by Joachim Ankerhold, J Ankerhold · 2 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum chaos and dynamical systems #Quantum many-body systems #cond-mat.soft #cond-mat.stat-mech
paper · pdf · doi:10.1209/epl/i2003-00323-8
published as Europhys. Lett. 61, 301 (2003) · 7 pages, 2 figures, to appear in Euro. Phys. Lett
arxiv created 2002/11/18 · openalex publication_date 2003/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The phase space dynamics of dissipative quantum systems in strongly condensed phase is considered. Based on the exact path integral approach, it is shown that the Wigner transform of the reduced density matrix obeys a time evolution equation of Fokker-Planck type valid from high down to very low temperatures. The effect of quantum fluctuations is discussed and the accuracy of these findings is tested against exact data for a harmonic system.