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FIELD
Math:Analysis
DATE
Mar 28 (Fri), 2025
TIME
10:00 ~ 11:30
PLACE
수림(204)
SPEAKER
Kim, Seonwoo
HOST
Kang, Nam-Gyu
INSTITUTE
Yonsei University
TITLE
$\Gamma$-Expansion of the Measure-Current Large Deviations Rate Functional
ABSTRACT
In this talk, we present the general theory of connecting the hierarchical structure of metastability and the $\Gamma$-expansion of the measure-current (or level-2.5) large deviations rate functional of non-reversible finite-state Markov chains. The first bridge between the metastability and the $\Gamma$-expansion of the (measure, or level-2) rate functional was discovered recently by Bertini, Gabrielli and Landim (Ann. Appl. Probab. 2024). We briefly review the previous works on this topic and present our own contributions. The talk is based on a recent work (arXiv:2412.13515) with Claudio Landim (IMPA).
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