No nosso encontro “Webinários de Matemática do PPGMat” desta semana, fala o Prof. Paulo Varandas (UFBA & FCT-CMUP), na palestra intitulada “Phase transitions and appearance of ghost measures”.Convidamos a todos para prestigiar nosso seminário.
Lembramos também que no YouTube, em www.youtube.com/channel/UC7hU77kWUskQWAHK1MwlcGg, vocês podem assistir a alguns dos webinários anteriores.
Paulo Varandas (UFBA & FCT-CMUP)
Abstract. The thermodynamic formalism for transitive uniformly hyperbolic dynamics is nowadays well understood and, among other aspects, it is worth mentioning that regular potentials (meaning Holder continuous) are so that the pressure function is differentiable and admit unique equilibrium states. The situation changes drastically in simple examples beyond uniform hyperbolicity, as the case of the Manneville-Pomeau maps, where different kinds of phase transitions appear due to the phenomenon of intermittency of an indifferent fixed point.
In this talk I will focus on this family and discuss a new aspect of the phase transitions, namely the appearance of finitely additive absolutely continuous invariant measures. This is part of a joint work with A. Castro (UFBA) and L. Cioletti (UnB).
Date: Quarta-feira, 04 de Novembro de 2020
Time: 14:00
Venue: Google Meet Platform at meet.google.com/ywh-ybta-fmf