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Chapitre D'ouvrage Année : 2012

COLLAPSE AND EVAPORATION OF A CANONICAL SELF-GRAVITATING GAS

Résumé

We review the out-of-equilibrium properties of a self-gravitating gas of particles in the presence of a strong friction and a random force (canonical gas). We assume a bare diffusion coefficient of the form D(ρ) = T ρ 1/n , where ρ is the local particle density, so that the equation of state is P (ρ) = D(ρ)ρ. Depending on the spatial dimension d, the index n, the temperature T , and whether the system is confined to a finite box or not, the system can reach an equilibrium state, collapse or evaporate. This article focuses on the latter cases, presenting a complete dynamical phase diagram of the system.
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Dates et versions

hal-02337235 , version 1 (29-10-2019)

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  • HAL Id : hal-02337235 , version 1

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Clément Sire, Pierre-Henri Chavanis. COLLAPSE AND EVAPORATION OF A CANONICAL SELF-GRAVITATING GAS. Twelfth Marcel Grossmann Meeting, The: On Recent Developments In Theoretical And Experimental General Relativity, Astrophysics And Relativistic Field Theories (In 3 Volumes) - Proceedings Of The Mg12 Meeting On General Relativity (World Scientific, 2012), 2012. ⟨hal-02337235⟩
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