English

KPZ equation tails for general initial data

Probability 2020-03-04 v2 Mathematical Physics math.MP

Abstract

We consider the upper and lower tail probabilities for the centered (by time/24/24) and scaled (according to KPZ time1/3^{1/3} scaling) one-point distribution of the Cole-Hopf solution of the KPZ equation when started with initial data drawn from a very general class. For the lower tail, we prove an upper bound which demonstrates a crossover from super-exponential decay with exponent 33 in the shallow tail to an exponent 5/25/2 in the deep tail. For the upper tail, we prove super-exponential decay bounds with exponent 3/23/2 at all depth in the tail.

Keywords

Cite

@article{arxiv.1810.07129,
  title  = {KPZ equation tails for general initial data},
  author = {Ivan Corwin and Promit Ghosal},
  journal= {arXiv preprint arXiv:1810.07129},
  year   = {2020}
}

Comments

40 pages, 2 figures

R2 v1 2026-06-23T04:42:04.852Z