Título: Some universal estimates for reversible Markov chains
Autores: Shkolnikov, Mykhaylo; University of California, Berkeley
Fecha: 2013-01-04
Publicador: Electronic journal of probability
Fuente:
Tipo: Peer-reviewed Article
Tema: Reversible Markov chains; convergence to equilibrium; time of coupling; entropy
60J10; 94A17
Descripción: We obtain universal estimates on the convergence to equilibrium and the times of coupling for continuous time irreducible reversible finite-state Markov chains, both in the total variation and in the $L^2$ norms. The estimates in total variation norm are obtained using a novel identity relating the convergence to equilibrium of a reversible Markov chain to the increase in the entropy of its one-dimensional distributions. In addition, we propose a universal way of defining the ultrametric partition structure on the state space of such Markov chains. Finally, for chains reversible with respect to the uniform measure, we show how the global convergence to equilibrium can be controlled using the entropy accumulated by the chain.
Idioma: Inglés

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