Hamiltonian truncation in AdS

by Marco Meineri

Monday 14 Sept 2020, 14:00 → 15:00 Europe/Zurich

4/3-006 - TH Conference Room (CERN)

Abstract

We study quantum field theory in AdS_2 within the framework of Hamiltonian truncation. We start from a solvable theory and we deform the Hamiltonian with an interaction term. We find the spectrum as a function of the coupling, and we connect the solvable regime with the strongly coupled flat space physics. Hamiltonian truncation in infinite volume presents specific challenges, and special care is needed to recover the physical energy gaps as the cutoff is removed. To this end, we propose a general prescription, we give an argument for its validity and we check it in various examples.

Based on

work in progress

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