Thermalization of quantum systems by finite baths

2005/11/03 by Jochen Gemmer, J Gemmer, Mathias Michel +1 · 3 citations
Computer Science · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Quantum Information and Cryptography #Quantum many-body systems #quant-ph

paper · pdf · doi:10.1209/epl/i2005-10363-0

published as Europhys. Lett. 73, 1 (2006) · 7 pages, 6 figures, accepted for publication in Eur. Phys. Lett

arxiv created 2005/11/03 · openalex publication_date 2005/11/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We consider a discrete quantum system coupled to a finite bath, which may consist of only one particle, in contrast to the standard baths which usually consist of continua of oscillators, spins, etc. We find that such finite baths may nevertheless equilibrate the system though not necessarily in the way predicted by standard open-system techniques. This behavior results regardless of the initial state being correlated or not.

Citations

• From pure Schrödingerian to statistical dynamics
• Non-Markovian dynamics in a spin star system: Exact solution and approximation techniques

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