Gibbs-non-Gibbs properties for evolving Ising models on trees

Details Gibbs-non-Gibbs properties for evolving Ising models on trees Gibbs-non-Gibbs properties for evolving Ising models on trees

2010-09-15

arxiv.org/abs/1009.2952v1

Physics

Mathematical Physics

Scientific paper

In this paper we study homogeneous Gibbs measures on a Cayley tree, subjected to an infinite-temperature Glauber evolution, and consider their (non-)Gibbsian properties. We show that the intermediate Gibbs state (which in zero field is the free-boundary-condition Gibbs state) behaves different from the plus and the minus state. E.g. at large times, all configurations are bad for the intermediate state, whereas the plus configuration never is bad for the plus state. Moreover, we show that for each state there are two transitions. For the intermediate state there is a transition from a Gibbsian regime to a non-Gibbsian regime where some, but not all con?gurations are bad, and a second one to a regime where all configurations are bad. For the plus and minus state, the two transitions are from a Gibbsian regime to a non-Gibbsian one and then back to a Gibbsian regime again.

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