How fast planar maps get swallowed by a peeling process

Electronic Communications in Probability

Nicolas Curien¹ 

关键词: random maps;    peeling process;    Lévy processes;    sub-diffusivity;   

DOI  :  10.1214/18-ECP123

学科分类：统计和概率

来源: Institute of Mathematical Statistics

【 摘 要 】

The peeling process is an algorithmic procedure that discovers a random planar map step by step. In generic cases such as the UIPT or the UIPQ, it is known [15] that any peeling process will eventually discover the whole map. In this paper we study the probability that the origin is not swallowed by the peeling process until time $n$ and show it decays at least as $n^{-2c/3}$ where \[ c \approx 0.1283123514178324542367448657387285493314266204833984375... \] is defined via an integral equation derived using the Lamperti representation of the spectrally negative $3/2$-stable Lévy process conditioned to remain positive [12] which appears as a scaling limit for the perimeter process. As an application we sharpen the upper bound of the sub-diffusivity exponent for random walk of [4].

【 授权许可】

CC BY