Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines cond-mat.stat-mech
Date Mercredi 9 Octobre 2019
Heure 12:00
Institut LPENS
Salle Conf IV
Nom de l'orateur Povolotsky
Prenom de l'orateur Alexander
Addresse email de l'orateur
Institution de l'orateur BLTP, JINR, HSE
Titre Statistics of Avalanche Currents in the Raise and Peel model
Résumé The Raise and Peel model is a stochastic model of fluctuating interface with non-local avalanche dynamics. Its dynamical rules stem from the structure of a specific representation of the Temperley-Lieb algebra, and its stochastic generator can be represented by the Hamiltonian of the XXZ Heisenberg quantum spin chain with twisted boundary conditions. We describe the recent progress in description of the statistics of the avalanches in the model. We focus on the large deviations of two avalanche currents in the thermodynamic limit, which reveal a phase transition in the behaviour of one current conditioned to atypical values of another one. We also describe a proof of the laws of large numbers for the two currents at arbitrary finite lattices, which in addition proves two earlier conjectures on the structure of the stationary state of the model. The technique is based on the analysis of the largest eigenvalue of the deformed stochastic generator using the Bethe ansatz and Baxter's T-Q relation.
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