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Mathematical Physics Seminar - Dr. Shrey Sanadhya ; PhD, The University of Iowa 2021. Current, Postdoc at the Einstein Institute of Mathematics, Edmond J. Safra Campus; The Hebrew University of Jerusalem

Nov 12, 2024

02:30 PM - 03:30 PM

Van Allen Hall, 309

30 North Dubuque Street, Iowa City, IA 52242

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Shrey Sanadhya

Title: Multidimensional local limit theorem in deterministic systems and an application to non-convergence of polynomial multiple averages.

Abstract: In this talk, for an ergodic probability preserving system (X,B,m,T), we will discuss the existence of a Z^d valued function , whose corresponding cocycle satisfies the d-dimensional local central limit theorem. As an application, we resolve a question of Huang, Shao and Ye, and Franzikinakis and Host regarding non-convergence in L^2 of polynomial multiple averages of non-commuting zero entropy transformations. We also provide first examples of failure of multiple recurrence for zero entropy transformations along polynomial iterates. This is joint work with Zemer Kosloff.

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