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Spins coupled to a spin bath: From integrability to chaos

URN to cite this document:
urn:nbn:de:bvb:355-epub-242977
Schliemann, John
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Date of publication of this fulltext: 11 May 2012 09:42


Abstract

Motivated by the hyperfine interaction of electron spins with surrounding nuclei, we investigate systems of central spins coupled to a bath of noninteracting spins in the framework of random matrix theory. With increasing number of central spins a transition from Poissonian statistics to the Gaussian orthogonal ensemble occurs which can be described by a generalized Brody distribution. These ...

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