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arXiv 1502.05972cond-mat.stat-mechmath-phmath.MPnucl-thphysics.bio-phq-bio.QM
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描述非经典粒子输运的线性类玻尔兹曼方程和小平均自由程的相关渐近解

Linear Boltzmann-like equation, describing non-classical particle transport, and related asymptotic solutions for small mean free paths

Sergey A. Rukolaine

摘要:

在经典的动力学或类动力学模型中,粒子自由程分布是指数的,但这更可能是一个例外而不是规则。在本文中,我们推导出一个线性玻尔兹曼方程的一般自由程分布的Alt的模型的框架中,数学生物学。9:147(1980)。在自由程分布至少有第一和第二有限矩的特殊情况下,我们构造了小平均自由程方程的渐近解。渐近解成为一个扩散近似的单速玻尔兹曼方程。

英文摘要:

In classical kinetic or kinetic-like models a particle free path distribution is exponensial, but this is more likely to be an exception than a rule. In this paper we derive a linear Boltzmann-like equation for a general free path distribution in the framework of Alt's model J. Math. Biol. 9:147 (1980). In the special case that the free path distribution has at least first and second finite moments we construct an asymptotic solution of the equation for small mean free paths. The asymptotic solution becomes a diffusion approximation to the one-speed Boltzmann-like 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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