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August 1998 The spectral gap of the REM under Metropolis dynamics
L. R. G. Fontes, M. Isopi, Y. Kohayakawa, P. Picco
Ann. Appl. Probab. 8(3): 917-943 (August 1998). DOI: 10.1214/aoap/1028903457


We derive upper and lower bounds for the spectral gap of the random energy model under Metropolis dynamics which are sharp in exponential order. They are based on the variational characterization of the gap. For the lower bound, a Poincaré inequality derived by Diaconis and Stroock is used. The scaled asymptotic expression is a linear function of the temperature. The corresponding function for a global version of the dynamics exhibits phase transition instead.

We also study the dependence of lower order terms on the volume. In the global dynamics, we observe a phase transition. For the local dynamics, the expressions we have, which are possibly not sharp, do not change their order of dependence on the volume as the temperature changes.


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L. R. G. Fontes. M. Isopi. Y. Kohayakawa. P. Picco. "The spectral gap of the REM under Metropolis dynamics." Ann. Appl. Probab. 8 (3) 917 - 943, August 1998.


Published: August 1998
First available in Project Euclid: 9 August 2002

zbMATH: 0935.60084
MathSciNet: MR1627811
Digital Object Identifier: 10.1214/aoap/1028903457

Primary: 60K35 , 82B44

Keywords: Convergence to equilibrium , Disordered systems , dynamical phase transition , Glauber dynamics , Metropolis dynamics , random energy model , spectral gap , Spin glasses

Rights: Copyright © 1998 Institute of Mathematical Statistics


Vol.8 • No. 3 • August 1998
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