May 2023 Weak convergence of directed polymers to deterministic KPZ at high temperature
Sourav Chatterjee
Author Affiliations +
Ann. Inst. H. Poincaré Probab. Statist. 59(2): 774-794 (May 2023). DOI: 10.1214/22-AIHP1287

Abstract

It is shown that when d3, the growing random surface generated by the (d+1)-dimensional directed polymer model at sufficiently high temperature, after being smoothed by taking microscopic local averages, converges to a solution of the deterministic KPZ equation in a suitable scaling limit.

On montre que quand d3, la surface aléatoire croissante engendrée par le modèle de polymère dirigé (d+1)-dimensionnel à une température suffisamment haute, après avoir été lissée en prenant des moyennes locales microscopiques, converge vers une solution de l’équation de KPZ déterministe dans une limite d’échelle appropriée.

Funding Statement

Research partially supported by NSF grant DMS-1855484.

Acknowledgements

I thank Chiranjib Mukherjee, Nikos Zygouras, and the anonymous referees for a number of helpful comments and references.

Citation

Download Citation

Sourav Chatterjee. "Weak convergence of directed polymers to deterministic KPZ at high temperature." Ann. Inst. H. Poincaré Probab. Statist. 59 (2) 774 - 794, May 2023. https://doi.org/10.1214/22-AIHP1287

Information

Received: 22 July 2021; Revised: 13 May 2022; Accepted: 30 May 2022; Published: May 2023
First available in Project Euclid: 12 April 2023

MathSciNet: MR4575016
zbMATH: 1517.82036
Digital Object Identifier: 10.1214/22-AIHP1287

Subjects:
Primary: 39A12 , 60G60 , 82C41

Keywords: Directed polymer , KPZ , Random surface , Scaling limit

Rights: Copyright © 2023 Association des Publications de l’Institut Henri Poincaré

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Vol.59 • No. 2 • May 2023
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