| Full text | |
| Author(s): |
Fontes, Luiz Renato
;
Machado, Mariela Penton
;
Zuaznabar, Leonel
Total Authors: 3
|
| Document type: | Journal article |
| Source: | ELECTRONIC JOURNAL OF PROBABILITY; v. 29, p. 28-pg., 2024-01-01. |
| Abstract | |
We consider the equilibrium surface of the Random Average Process started from an inclined plane, as seen from the height of the origin, obtained in [8], where its fluctuations were shown to be of order of the square root of the distance to the origin in one dimension, and the square root of the log of that distance in two dimensions (and constant in higher dimensions). Remarkably, even if not pointed out explicitly in [8], the covariance structure of those fluctuations is given in terms of the Green's function of a certain random walk, and thus corresponds to those of Discrete Gaussian Free Fields. In the present paper we obtain the scaling limit of those fluctuations in one and two dimensions, in terms of Gaussian processes, in the sense of finite dimensional distributions. In one dimension, the limit is given by Brownian Motion; in two dimensions, we get a process with a discontinuous covariance function. (AU) | |
| FAPESP's process: | 17/10555-0 - Stochastic modeling of interacting systems |
| Grantee: | Fabio Prates Machado |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 20/02662-4 - A study of the long time behavior of three stochastic processes: a particle system with mechanical interactions, the REM under metropolis dynamics and the two-type contact process |
| Grantee: | Mariela Pentón Machado |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |