Cited by 134Quantum Mechanics and ApplicationsAdvanced Thermodynamics and Statistical MechanicsQuantum many-body systems

Non-Markovian quantum dynamics: Correlated projection superoperators and Hilbert space averaging

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Breuer, Heinz-Peter, Gemmer, Jochen, Michel, Mathias·2006·Physical Review E

Abstract

The time-convolutionless (TCL) projection operator technique allows a systematic analysis of the non-Markovian quantum dynamics of open systems. We present a class of projection superoperators that project the states of the total system onto certain correlated system-environment states. It is shown that the application of the TCL technique to this class of correlated superoperators enables the nonperturbative treatment of the dynamics of system-environment models for which the standard approach fails in any finite order of the coupling strength. We demonstrate further that the correlated superoperators correspond to the idea of a best guess of conditional quantum expectations, which is determined by a suitable Hilbert-space average. The general approach is illustrated by means of the model of a spin that interacts through randomly distributed couplings with a finite reservoir consisting of two energy bands. Extensive numerical simulations of the full Schrödinger equation of the model reveal the power and efficiency of the method.

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  • Large couplings or interactions with low-temperature reservoirs can lead to strong correlations resulting in long memory times and in a failure of the Markov approximation.

    “However, large couplings or interactions with lowtemperature reservoirs can lead to strong correlations resulting in long memory times and in a failure of the Markov approximation.”

    From Foundations and measures of quantum non-Markovianity (2012) · cites this paper as [16]

  • The standard Markov condition alone does not guarantee that the Markovian master equation provides a reasonable description of the dynamics.

    “Moreover, the standard Markov condition (34) alone does not guarantee, in general, that the Markovian master equation provides a reasonable description of the dynamics, a situation which can occur, for example, for finite and/or structured reservoirs [16, 17].”

    From Foundations and measures of quantum non-Markovianity (2012) · cites this paper as [16]

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Authors
Breuer, H.-P., Gemmer, J., & Michel, M.
Affiliations
University of Freiburg (DE)
Venue
Physical Review E
Published
2006-01-27
Volume
73
Issue
1
Pages
016139-016139
ISSN
  • 1539-3755 (ISSN-L)
  • 1550-2376
OpenAlex
W2089885138
Cited by
134
References
51
Citations by year
2026: 3 · 2025: 4 · 2024: 5 · 2023: 3 · 2022: 3 · 2021: 4 · 2020: 5 · 2019: 3 · 2018: 3 · 2017: 7 · 2016: 2 · 2015: 2 · 2014: 3 · 2013: 4 · 2012: 9
FWCI
11.83
Type
journal article
Language
en
Open access
Locations
  • Physical Review E (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
  • arXiv (Cornell University)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Thermodynamics and Statistical Mechanics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
Keywords
non-Markovian dynamics, open quantum systems, non-perturbative treatment, random couplings, finite reservoir

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