Finite quantum environments as thermostats: an analysis based on the Hilbert space average method

Details Finite quantum environments as thermostats: an analysis based on the Hilbert space average method Finite quantum environments as thermostats: an analysis based on the Hilbert space average method

2006-12-08

arxiv.org/abs/quant-ph/0612062v1

Physics

Quantum Physics

12 pages, 10 figures

Scientific paper

10.1140/epjb/e2006-00407-3

We consider discrete quantum systems coupled to finite environments which may possibly 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 environments may, nevertheless, act as thermostats, i.e., equilibrate the system though not necessarily in the way predicted by standard open system techniques. Thus, we apply a novel technique called the Hilbert space Average Method (HAM) and verify its results numerically.

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