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Two-sided Green function estimates for killed subordinate Brownian motions (CROSBI ID 175160)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Kim, Panki ; Song, Renming ; Vondraček, Zoran Two-sided Green function estimates for killed subordinate Brownian motions // Proceedings of the London Mathematical Society, 104 (2012), 5; 927-958. doi: 10.1112/plms/pdr050

Podaci o odgovornosti

Kim, Panki ; Song, Renming ; Vondraček, Zoran

engleski

Two-sided Green function estimates for killed subordinate Brownian motions

A subordinate Brownian motion is a L\'evy process which can be obtained by replacing the time of the Brownian motion by an independent subordinator. The infinitesimal generator of a subordinate Brownian motion is $-\phi(-\Delta)$, where $\phi$ is the Laplace exponent of the subordinator. In this paper, we consider a large class of subordinate Brownian motions without diffusion component and with $\phi$ comparable to a regularly varying function at infinity. This class of processes includes symmetric stable processes, relativistic stable processes, sums of independent symmetric stable processes, sums of independent relativistic stable processes, and much more. We give sharp two-sided estimates on the Green functions of these subordinate Brownian motions in any bounded $\kappa$-fat open set $D$. When $D$ is a bounded $C^{; ; ; ; ; ; 1, 1}; ; ; ; ; ; $ open set, we establish an explicit form of the estimates in terms of the distance to the boundary. As a consequence of such sharp Green function estimates, we obtain a boundary Harnack principle in $C^{; ; ; ; ; ; 1, 1}; ; ; ; ; ; $ open sets with explicit rate of decay.

Green function ; Poisson kernel ; subordinate Brownian motion ; $\kappa$-fat open set ; $C^{; ; ; ; ; ; 1 ; 1}; ; ; ; ; ; $ open set ; symmetric stable process ; relativistic stable process ; harmonic functions ; Harnack inequality ; boundary Harnack principle ; fluctuation theory ; regularly varying function

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Podaci o izdanju

104 (5)

2012.

927-958

objavljeno

0024-6115

1460-244X

10.1112/plms/pdr050

Povezanost rada

Matematika

Poveznice
Indeksiranost