Decoherence in the Spin Bath

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We develop a mathematical description of the decoherence caused by "spin baths", such as nuclear spins or magnetic impurities. In contrast to the usual oscillator bath models of quantum environments, decoherence in the spin bath can occur without any dissipation. Given the almost ubiquitous presence of nuclear spins in nature, our results have important consequences for quantum measurement theory, particularly as the decoherence mechanisms in spin baths work very differently from those in oscillator baths.
4 pages, RevTex, 1 figure appended at the end of file, Sumbitted to PRL 18 July 1995, e-mail: stamp@physics.ubc.ca

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/27388

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9511009
 http://arxiv.org/abs/cond-mat/9511009

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arXiv