Found 2 result(s)

16.12.2020 (Wednesday)

Hamiltonian truncation in AdS

Regular Seminar Marco Meineri (CERN)

13:45 KCL
room Zoom

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 aim at connecting 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. [For the link to the Zoom room, please email].

21.02.2019 (Thursday)

Reflection and transmission coefficients for conformal interfaces.

Regular Seminar Marco Meineri (EPFL, Lausanne)

14:00 QMW
room G O Jones 610

We probe a generic two dimensional conformal interface via a collider experiment. We measure the energy and charges which are reflected and transmitted through the interface. We find that the average transmitted energy is independent of the way the state is constructed and determined by the central charge and a single piece of CFT data. We comment on the universality of the result and discuss some examples.