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arXiv 1607.04028math.AP
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非经典迁移方程的分数阶扩散极限

Fractional Diffusion Limits of Non-Classical Transport Equations

Martin Frank, Weiran Sun

摘要:

本文建立了[E. W. Larsen,非经典粒子输运的广义Boltzmann方程,核应用数学与计算和超级计算联合国际专题会议,2007年]。通过引入适当的尺度参数,限制将是定期或分数扩散方程取决于尾部行为的路径长度分布。我们的分析使用了结合矩量法的傅里叶变换。最后,我们评论的扩散极限的周期性洛伦兹气体方程。

英文摘要:

We establish asymptotic diffusion limits of the non-classical transport equation derived in [E. W. Larsen, A generalized Boltzmann equation for non-classical particle transport, Joint international topical meeting on mathematics & computation and supercomputing in nuclear applications, 2007]. By introducing appropriate scaling parameters, the limits will be either regular or fractional diffusion equations depending on the tail behaviour of the path-length distribution. Our analysis uses the Fourier transform combined with a moment method. We conclude with remarks on the diffusion limit of the periodic Lorentz gas equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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