Dynamical thermalization in time-dependent billiards

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorHansen, Matheus-
Autor(es): dc.creatorCiro, David-
Autor(es): dc.creatorCaldas, Iberê L.-
Autor(es): dc.creatorLeonel, Edson D. [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:23:19Z-
Data de disponibilização: dc.date.available2022-02-22T00:23:19Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-10-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1063/1.5120023-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/198028-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/198028-
Descrição: dc.descriptionNumerical experiments of the statistical evolution of an ensemble of noninteracting particles in a time-dependent billiard with inelastic collisions reveals the existence of three statistical regimes for the evolution of the speed ensemble, namely, diffusion plateau, normal growth/exponential decay, and stagnation. These regimes are linked numerically to the transition from Gauss-like to Boltzmann-like speed distributions. Furthermore, the different evolution regimes are obtained analytically through velocity-space diffusion analysis. From these calculations, the asymptotic root mean square of speed, initial plateau, and the growth/decay rates for an intermediate number of collisions are determined in terms of the system parameters. The analytical calculations match the numerical experiments and point to a dynamical mechanism for thermalization, where inelastic collisions and a high-dimensional phase space lead to a bounded diffusion in the velocity space toward a stationary distribution function with a kind of reservoir temperature determined by the boundary oscillation amplitude and the restitution coefficient.-
Descrição: dc.descriptionInstituto de Física Universidade de São Paulo-
Descrição: dc.descriptionInstituto de Astronomia Geofísica e Ciências Atmosféricas Universidade de São Paulo-
Descrição: dc.descriptionDepartamento de Física UNESP-
Descrição: dc.descriptionDepartamento de Física UNESP-
Idioma: dc.languageen-
Relação: dc.relationChaos-
???dc.source???: dc.sourceScopus-
Título: dc.titleDynamical thermalization in time-dependent billiards-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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