Events for 05/21/2018 from all calendars
Noncommutative Geometry Seminar
Time: 09:00AM - 5:00PM
Title: Noncommutative geometry and index theory for group actions and singular spaces
URL: Event link
Probability Seminar
Time: 2:00PM - 3:00PM
Location: BLOC 628
Speaker: Pascal Maillard, Université Paris-Sud
Title: Fluctuations of the Gibbs measure of branching Brownian motion at critical temperature
Abstract: Branching Brownian motion is a prototype of a disordered system and a toy model for spin glasses and log-correlated fields. It also has an exact duality relation with the FKPP equation, a well-known reaction diffusion equation. In this talk, I will present recent results (obtained with Michel Pain) on the fluctuations of the Gibbs measure at the critical temperature. By Gibbs measure I mean here the measure whose atoms are the positions of the particles, weighted by their Gibbs weight. It is known that this Gibbs measure, after a suitable scaling, converges to a deterministic measure. We prove a non-standard central limit theorem for the integral of a function against the Gibbs measure, for a large class of functions. The possible limits are 1-stable laws with arbitrary asymmetry parameter depending on the function. In particular, the derivative martingale and the usual additive martingale satisfy such a central limit theorem with, respectively, a totally asymmetric and a Cauchy distribution.
Student/Postdoc Working Geometry Seminar
Time: 5:00PM - 6:00PM
Location: BLOC 628
Speaker: JM Landsberg, TAMU
Title: Moment maps and information theory