Decoherence, Time Scales and Pointer States

Details Decoherence, Time Scales and Pointer States Decoherence, Time Scales and Pointer States

2011-09-12

arxiv.org/abs/1109.2412v2

Physica A 391 (2012) 2286-2290

Physics

Quantum Physics

Few important modifications. To appear in Physica A

Scientific paper

10.1016/j.physa.2011.11.056

Certain issues regarding the time-scales over which environment-induced decoherence occurs, and the nature of emergent pointer states, are discussed. A model system, namely, a Stern-Gerlach setup coupled to a quantum mechanical "heat-bath" is studied. The emergent pointer states for this system are obtained, which are different from those discussed in the literature. It is pointed out that this difference is due to some confusion regarding the decoherence time-scale, which is clarified here.

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