Spectral upper bound for the torsion function of symmetric stable processes
Spectral upper bound for the torsion function of symmetric stable processes
复制标题
对称稳定过程扭转函数的谱上限
DOI:
10.1090/proc/15764
复制
发表时间:
2020
期刊:
影响因子:
--
通讯作者:
Hugo Panzo
中科院分区:
文献类型:
--
作者:
Hugo Panzo
Bounds on the product of the principal eigenvalue and $L^\infty$ norm of the torsion function of Brownian motion that are uniform over a given class of domains $D\subset\mathbb{R}^d$ have been a topic of active research with several improvements and conjectures appearing in the literature recently. In particular, a result of H. Vogt (2019) gives an explicit upper bound that is valid for all open sets with positive principal eigenvalue and is sharp up to leading order for large $d$. In this paper, we use Vogt's result to derive an analogous bound for the symmetric stable processes which captures the correct order of growth in $d$, improving upon the existing result of Giorgi and Smits (2010). Along the way, we prove a torsion analogue of Chen and Song's (2005) two-sided eigenvalue estimates for subordinate Brownian motion, which may be of independent interest.
影响因子:
1
作者:
Lu, Jianfeng;Steinerberger, Stefan
通讯作者:
Steinerberger, Stefan
影响因子:
1.3
作者:
Bañuelos, Rodrigo;Mariano, Phanuel;Wang, Jing
通讯作者:
Wang, Jing