Multiple phases and return to equilibrium |
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| Authors: | A. L. Carey L. R. Hume |
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| Affiliation: | (1) School of Information Science and Technology, Flinders University of South Australia, Australia;(2) Department of Mathematics, School of MPCE, Macquarie University, Australia |
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| Abstract: | This paper considers the problem of return to equilibrium for perturbations of the dynamics of the one-sided and two-sidedXY-models with external field. We find that, in the presence of multiple ground states, return to equilibrium fails for certain perturbations while still holding wen there is a unique ground state. |
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| Keywords: | XY-model return to equilibrium perturbed dynamics C*-algebra spectral theory |
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