Hypocoercivity for the Linear Boltzmann Equation with Confining Forces

Hypocoercivity for the Linear Boltzmann Equation with Confining Forces
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具有约束力的线性玻尔兹曼方程的低矫顽力

DOI:
10.1007/s10955-012-0545-3
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发表时间:
2011-12
影响因子:
1.6
通讯作者:
Li Wei-Xi
Li Wei-Xi
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Duan Renjun;Li Wei-Xi

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本文研究具有限制势力的线性玻尔兹曼方程上柯西问题解的超矫顽力性质。我们获得了在某些条件下初始数据和势函数解收敛到稳态的指数时间速率。具体来说,正确选择初始数据,使得质量、总能量和可能的部分角动量的守恒定律在所有非负时间都得到满足,并且允许包括一些多项式在内的一大类势能。结果还将 Duan (Nonlinearity 24(8):2165–2189 (2011)) 中考虑的抛物线力的情况扩展到此处的非抛物线一般情况。
This paper is concerned with the hypercoercivity property of solutions to the Cauchy problem on the linear Boltzmann equation with a confining potential force. We obtain the exponential time rate of solutions converging to the steady state under some conditions on both initial data and the potential function. Specifically, initial data is properly chosen such that the conservation laws of mass, total energy and possible partial angular momentums are satisfied for all nonnegative time, and a large class of potentials including some polynomials are allowed. The result also extends the case of parabolic forces considered in Duan (Nonlinearity 24(8):2165–2189 (2011)) to the non-parabolic general case here.
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