Volume 73, Number 1, January 2006
|Page(s)||1 - 7|
|Published online||30 November 2005|
Thermalization of quantum systems by finite baths
Physics Department, University of Osnabrück - Barbarastr. 7 49069 Osnabrück, Germany
2 Institute of Theoretical Physics I, University of Stuttgart Pfaffenwaldring 57, 70550 Stuttgart, Germany
Corresponding author: email@example.com
Accepted: 31 October 2005
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.
PACS: 03.65.Yz – Decoherence; open systems; quantum statistical methods / 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.30.-d – Quantum statistical mechanics
© EDP Sciences, 2005
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