论文标题

harnack的不平等和随机反应扩散方程的不平等现象,$ l^p $

Harnack Inequalities and Ergodicity of Stochastic Reaction-Diffusion Equation in $L^p$

论文作者

Liu, Zhihui

论文摘要

我们为随机反应 - 扩散方程式提供了Harnack的不平等,其耗散漂移是由$ l^p $ - 空间在任何$ p \ ge 2 $中驱动的。这些不等式用于调查相应的马尔可夫半群$(p_t)$的终点。我们方法的主要成分是通过变更度量来耦合。将我们的结果应用于随机反应扩散方程,超线性生长漂移具有负引导系数,受Lipschitz术语扰动,表明$(p_t)$在所有$ p \ ge 2 $中具有独特的且因此具有$ l^p $的独特且因此具有巨大的不变性,而不是Lipschitz术语。

We derive Harnack inequalities for a stochastic reaction-diffusion equation with dissipative drift driven by additive irregular noise in the $L^p$-space for any $p \ge 2$. These inequalities are utilized to investigate the ergodicity of the corresponding Markov semigroup $(P_t)$. The main ingredient of our method is a coupling by the change of measure. Applying our results to the stochastic reaction-diffusion equation with a super-linear growth drift having a negative leading coefficient, perturbed by a Lipschitz term, indicates that $(P_t)$ possesses a unique and thus ergodic invariant measure in $L^p$ for all $p \ge 2$, which is independent of the Lipschitz term.

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