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Decoherence in a spin--spin-bath model with environmental self-interaction

L. Tessieri·J. Wilkie
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Abstract

A low temperature model system consisting of a central spin coupled to a spin-bath is studied to determine whether interaction among bath spins has an effect on central spin dynamics. In the absence of intra-environmental coupling, decoherence of the central spin is fast and irreversible. Strong intra-environmental interaction results in an effective decoupling of the central spin from the bath and suppression of decoherence. Weaker intra-environmental coupling reduces but does not eliminate decoherence. We believe that similar behaviour will be observed in any system with a self-interacting environment.

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L. Tessieri, J. Wilkie. 2002-09-11. Decoherence in a spin--spin-bath model with environmental self-interaction. https://arxiv.org/abs/quant-ph/0209079

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