Singular solutions for the Uehling–Uhlenbeck equation

Singular solutions for the Uehling–Uhlenbeck equation
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DOI:
10.1017/s0308210506000655
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发表时间:
2008-02
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
通讯作者:
M. Escobedo;S. Mischler;J. Velázquez
M. Escobedo;S. Mischler;J. Velázquez
中科院分区:
其他
文献类型:
--
作者:
M. Escobedo;S. Mischler;J. Velázquez

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在本文中,我们证明了Uehling-Uhlenbeck方程的解的存在性,其行为类似于$k^{-7/6}$ as $k\to0$.从物理学的角度来看,这样的解可以被认为是动量空间中的粒子分布,其中有一个零动量粒子的汇(或源)。我们的构造是基于我们在以前的文章中得到的关于奇异函数k^{-7/6}$的线性化方程的半群的精确估计。
In this paper we prove the existence of solutions of the Uehling–Uhlenbeck equation that behave like $k^{-7/6}$ as $k\to0$. From the physical point of view, such solutions can be thought as particle distributions in the space of momentum having a sink (or a source) of particles with zero momentum. Our construction is based on the precise estimates of the semigroup for the linearized equation around the singular function $k^{-7/6}$ that we obtained in an earlier paper.