MARK KAC SEMINAR

May Season 2024-2025 Main speaker: Nathanael Berestycki

May 9, 2025

Location: JK 2-3, room 220
11:00–12:45, 14:15–16:00
Nathanael Berestycki (Vienna) homepage

On the spectral geometry of Liouville quantum gravity.

In these talks we will discuss the spectral geometry of the Laplace-Beltrami operator associated to Liouville quantum gravity. Over the course of two lectures, our goals will be to:

  • Explain how eigenvalues and eigenfunctions for LQG are defined;
  • Show that the eigenvalues a.s. obey a Weyl law (joint work with Mo Dick Wong). This is closely related to the short time asymptotics of the LQG heat kernel;
  • Discuss the second term in the Weyl law and its relation to the KPZ (Knizhnik-Polyakov-Zamolodchikov) scaling relation;
  • Finally we will talk about some conjectures which suggest a rather beautiful connection to a phenomenon called quantum chaos.