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On the Boltzmann Equation for 2D Bose-Einstein Particles

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Abstract

This paper considers the spatially homogeneous Boltzmann equation for 2D Bose-Einstein particles. Suppose the collision kernel satisfies some assumptions that include the hard disk model and other possible physical models. We prove the existence of global in time conservative measure solutions of the equation for isotropic initial data, and that for any initial datum which is not totally singular and has positive energy, the solution always converges strongly to the Bose-Einstein distribution as time goes to infinity. This implies that for the present 2D model there is no Bose-Einstein condensation in the sense of long-time limit.

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Authors and Affiliations

  1. Department of Mathematical Sciences, Tsinghua University, Beijing, 100084, China

    Xuguang Lu & Xiangdong Zhang

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  1. Xuguang Lu
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  2. Xiangdong Zhang
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Correspondence to Xuguang Lu.

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Lu, X., Zhang, X. On the Boltzmann Equation for 2D Bose-Einstein Particles. J Stat Phys 143, 990–1019 (2011). https://doi.org/10.1007/s10955-011-0221-z

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  • DOI: https://doi.org/10.1007/s10955-011-0221-z

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