Hydrodynamical limit for a nongradient system: The generalized symmetric exclusion process

Hydrodynamical limit for a nongradient system: The generalized symmetric exclusion process
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非梯度系统的流体动力学极限:广义对称排除过程

DOI:
10.1002/cpa.3160471104
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发表时间:
1994
期刊:
影响因子:
--
通讯作者:
S. Olla
S. Olla
中科院分区:
--
文献类型:
--
作者:
C. Kipnis;C. Landim;S. Olla

文献摘要

被引文献

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我们考虑一个对称的简单排斥过程,其中每个位置最多允许两个粒子。事实证明,这个模型是非梯度的。我们证明了在空间和时间的扩散尺度下,粒子的密度收敛于扩散方程的解。我们给出了扩散系数的变分刻画。对于有限体积过程的生成元,我们还证明了在体积内均匀的谱间隙的一个下界。©1994 John Wiley&Sons,Inc.
We consider a symmetric simple exclusion process where at most two particles per site are permitted. This model turns out to be nongradient. We prove that the particles' densities, under a diffusive rescaling of space and time, converge to the solution of a diffusion equation. We give a variational characterization of the diffusion coefficent. We also prove, for the generator of the process in finite volume, a lower bound on the spectral gap uniform in the volume. © 1994 John Wiley & Sons, Inc.