Large deviations for the macroscopic motion of an interface
| Autor: | P. Birmpa, Dimitrios Tsagkarogiannis, Nicolas Dirr |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Sharp-interface limit
Crystal system Motion (geometry) FOS: Physical sciences Context (language use) Glauber dynamics 01 natural sciences Upper and lower bounds Kac potential Large deviations Metastability Nucleation Statistical and Nonlinear Physics Mathematical Physics Position (vector) FOS: Mathematics Statistical physics 0101 mathematics QA Physics 010102 general mathematics Probability (math.PR) 82C 60F10 60G Mathematical Physics (math-ph) 010101 applied mathematics Macroscopic scale Large deviations theory Glauber Mathematics - Probability |
| ISSN: | 0022-4715 |
| Popis: | We study the most probable way an interface moves on a macroscopic scale from an initial to a final position within a fixed time in the context of large deviations for a stochastic microscopic lattice system of Ising spins with Kac interaction evolving in time according to Glauber (non-conservative) dynamics. Such interfaces separate two stable phases of a ferromagnetic system and in the macroscopic scale are represented by sharp transitions. We derive quantitative estimates for the upper and the lower bound of the cost functional that penalizes all possible deviations and obtain explicit error terms which are valid also in the macroscopic scale. Furthermore, using the result of a companion paper about the minimizers of this cost functional for the macroscopic motion of the interface in a fixed time, we prove that the probability of such events can concentrate on nucleations should the transition happen fast enough. |
| Databáze: | OpenAIRE |
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