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  Mixing and perfect sampling in one-dimensional particle systems

Lei, z, Z., & Krauth, W. (2018). Mixing and perfect sampling in one-dimensional particle systems. EPL, 124(2): 20003. doi:10.1209/0295-5075/124/20003.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-A0B6-B Version Permalink: http://hdl.handle.net/21.11116/0000-0002-A0B7-A
Genre: Journal Article

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Lei, z, Ze1, Author
Krauth, Werner2, Author              
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1external, ou_persistent22              
2Max Planck Institute for the Physics of Complex Systems, Max Planck Society, ou_2117288              

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 Abstract: We study the approach to equilibrium of the event-chain Monte Carlo (ECMC) algorithm for the one-dimensional hard-sphere model. Using the connection to the coupon-collector problem, we prove that a specific version of this local irreversible Markov chain realizes perfect sampling in O(N-2 log N) single steps, whereas the reversible local Metropolis algorithm requires O(N-3 log N) single steps for mixing. This confirms a special case of an earlier conjecture about O(N-2 log N) scaling of mixing times of ECMC and of the lifted forward Metropolis algorithm, its discretized variant. We also prove that sequential ECMC (with swaps) realizes perfect sampling in O(N-2) single events. Numerical simulations indicate a cross-over towards O(N-2 log N) mixing for the sequential forward swap Metropolis algorithm, that we introduce here. We point out open mathematical questions and possible applications of our findings to higher-dimensional models. Copyright (C) EFLA, 2018

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 Dates: 2018-11-192018-10
 Publication Status: Published in print
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Title: EPL
  Other : EPL: A Letters Journal Exploring the Frontiers of Physics
  Other : Europhysics Letters
  Abbreviation : Europhys. Lett.
Source Genre: Journal
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Publ. Info: Les-Ulis : EDP Science
Pages: - Volume / Issue: 124 (2) Sequence Number: 20003 Start / End Page: - Identifier: ISSN: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/0295-5075