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Entropy production inequalities for the Kac Walk

dc.creatorCarlen, EA
dc.creatorCarvalho, MC
dc.creatorEinav, Amit
dc.date.accessioned2017-04-20
dc.date.accessioned2018-11-24T23:27:08Z
dc.date.available2017-04-24T12:59:51Z
dc.date.available2018-11-24T23:27:08Z
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/263762
dc.identifier.urihttp://repository.aust.edu.ng/xmlui/handle/123456789/3952
dc.description.abstractMark Kac introduced what is now called 'the Kac Walk' with the aim of investigating the spatially homogeneous Boltzmann equation by probabilistic means. Much recent work, discussed below, on Kac's program has run in the other direction: using recent results on the Boltzmann equation, or its one-dimensional analog, the non-linear Kac-Boltzmann equation, to prove results for the Kac Walk. Here we investigate new functional inequalities for the Kac Walk pertaining to entropy production, and introduce a new form of `chaoticity'. We then show how these entropy production inequalities imply entropy production inequalities for the Kac-Boltzmann equation. This results validate Kac's program for proving results on the non-linear Boltzmann equation via analysis of the Kac Walk, and they constitute a partial solution to the `Almost' Cercignani Conjecture on the sphere.
dc.languageen
dc.publisherAmerican Institute of Mathematical Sciences
dc.publisherKinetic and Related Models
dc.subjectmath-ph
dc.subjectmath-ph
dc.subjectmath.MP
dc.subject60J25, 82C41, 82C41}
dc.titleEntropy production inequalities for the Kac Walk
dc.typeArticle


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