Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series LPTMS
Subjects cond-mat.stat-mech
Date Tuesday 10 January 2023
Time 11:00
Institute LPTMS
Seminar Room Salle des séminaires du FAST et du LPTMS, bâtiment Pascal n°530
Speaker's Last Name Rotaru
Speaker's First Name Andrei
Speaker's Email Address
Speaker's Institution LPTHE
Title New results for Rényi entanglement entropies in one-dimensional quantum critical systems with boundaries
Abstract Entanglement measures have turned out to be a powerful probe into the physics of 1D quantum critical systems. Most known exact results address the entanglement in critical quantum systems with periodic BC. For open systems, there are results for the Rényi entropies and other entanglement measures of an interval touching one of two identical boundaries with the rest of the system. However, for more generic bipartitions or mixed boundaries, few exact calculations have been completed. In this talk, we will present new results for the Rényi entropies of an interval in systems with open boundaries, and sketch, in a pedagogical manner, the key ideas of their computation through 2D CFT methods. This will be supplemented by comparison with spin chain numerics and a discussion of finite-size effects. Partly based on arXiv:2112.01929.
arXiv Preprint Number
Comments Hybrid: onsite seminar + zoom. For zoom info, please write to valentina.ros@universite-paris-saclay.fr or check LPTMS website http://lptms.u-psud.fr/en/
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