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arXiv · 1905.02146

The interchange process on high-dimensional products

Jonathan Hermon·Justin Salez
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Abstract

We resolve a long-standing conjecture of Wilson (2004), reiterated by Oliveira (2016), asserting that the mixing-time of the unit-rate Interchange Process on the $n$-dimensional hypercube is of order $n$. This follows from a sharp inequality established at the level of Dirichlet forms, from which we also deduce that macroscopic cycles emerge in constant time, and that the log-Sobolev constant of the exclusion process is of order $1$. Beyond the hypercube, our results apply to cartesian products of arbitrary graphs of fixed size, shedding light on a broad conjecture of Oliveira (2013).

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Jonathan Hermon, Justin Salez. 2019-05-06. The interchange process on high-dimensional products. https://arxiv.org/abs/1905.02146

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