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The two-dimensional KPZ equation in the entire subcritical regime
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Caravenna, Francesco, Sun, Rongfeng and Zygouras, Nikos (2019) The two-dimensional KPZ equation in the entire subcritical regime. Annals of Probability . (In Press)
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Abstract
We consider the KPZ equation in space dimension 2 driven by space-time white noise. We showed in previous work that if the noise is mollified in space on scale and its strength is scaled as , then a transition occurs with explicit critical point . Recently Chatterjee and Dunlap showed that the solution admits subsequential scaling limits as , for sufficiently small . We prove here that the limit exists in the entire subcritical regime and we identify it as the solution of an additive Stochastic Heat Equation, establishing so-called Edwards-Wilkinson fluctuations. The same result holds for the directed polymer model in random environment in space dimension 2.
| Item Type: | Journal Article | ||||||
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| Divisions: | Faculty of Science > Statistics | ||||||
| Journal or Publication Title: | Annals of Probability | ||||||
| Publisher: | Institute of Mathematical Statistics | ||||||
| ISSN: | 0091-1798 | ||||||
| Official Date: | 25 June 2019 | ||||||
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| Date of first compliant deposit: | 9 September 2019 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | In Press | ||||||
| Publisher Statement: | "The right to place the final version of this article (exactly as published in the journal) on their own homepage or in a public digital repository, provided there is a link to the official journal site." | ||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||
| RIOXX Funder/Project Grant: |
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