Ho il piacere di annunciare il seguente seminario di Giovanni Peccati (Luxembourg University):
"Stopping sets and phase transitions on the Poisson space"
Mercoledì 10 febbraio 2021 ore 14:30
Seguono il riassunto e il link Zoom. Tutti gli interessati sono invitati a partecipare.
Francesco Caravenna
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Link Zoom: https://us02web.zoom.us/j/81567245594?pwd=OFJwNzNMYmRxYXl6T0srU2gyamdWZz09
(ID: 815 6724 5594 Passcode: 969423)
Abstract:
I will discuss several refinements of the Poincaré inequality on the Poisson space, based on the use of "restricted hypercontractivity", stopping sets and continuous-time decision trees. One of the main estimates presented in my talk corresponds to an intrinsic, infinite-dimensional version of the "OSSS inequality" (O'Donnel, Saks, Schramm, Servedio, 2006), allowing one to control the fluctuations of a given functional by means of its decision tree complexity. The research discussed in my talk is strongly motivated by the analysis of sharp phase transitions in continuum percolation models. If time permits, I will also discuss an intrinsic version of the Schramm-Steif inequality on the Poisson space - which is particularly adapted to capture noise sensitivity at criticality. Based on joint works with G. Last and D. Yogeshwaran (2021), and with I. Nourdin and X. Yang (2019).
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Francesco Caravenna
Dipartimento di Matematica e Applicazioni Università degli Studi di Milano-Bicocca Via Cozzi 55, 20125 Milano, Italy
http://www.matapp.unimib.it/~fcaraven/ _________________________________________