Is the decoherence of a system the result of its interaction with the environment?

Details Is the decoherence of a system the result of its interaction with the environment? Is the decoherence of a system the result of its interaction with the environment?

2010-01-20

arxiv.org/abs/1001.3634v1

Mod.Phys.Lett.A25:1431-1439,2010

Physics

Quantum Physics

4 Pages, 5 Figures

Scientific paper

10.1142/S0217732310032664

According to a usual reading, decoherence is a process resulting from the interaction between a small system and its large environment where information and energy are dissipated. The particular models treated in the literature on the subject reinforce this idea since, in general, the behavior of a particle immersed in a large "bath" composed by many particles is studied. The aim of this letter is to warn against this usual simplified reading. By means of the analysis of a well-known model, we will show that decoherence may occur in a system interacting with an environment consisting of only one particle.

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