High Energy Particle Theory Seminar: Emanuel Katz - “Towards Non-perturbative QFT in Infinite Volume: From Time Dependent Observables to Thermalization”

Event time: 
Tuesday, December 13, 2022 - 4:00pm to 5:00pm
Sloane Physics Laboratory SPL, Room 51 See map
217 Prospect Street
New Haven, CT 06511
Event description: 

I will describe progress in formulating and solving QFT non-perturbatively in the infinite volume limit using Hamiltonian Truncation. I will present new results for time-dependent observables in a certain class of both Lagrangian and non-Lagrangian theories in 1+1d. I will also present our study of chaos and thermalization for a scalar theory, where we test the Eigenstate Thermalization Hypothesis (ETH). While we do find results which are broadly consistent with ETH, at weak coupling we also find a set of “scar” states, which do not satisfy Random Matrix Statistics, and which can be distinguished from the rest of the thermal states by the expectation value of local operators.
Host: Bianka Mecaj, Petar Tadic, & Yuan Xin