Emergence and breakdown of semiclassical picture in quasiparticle excited states

Time：2023-05-31 Wed 14:30-16:30

Venue：Venue: A3-2-201 ZOOM: 864 6244 4718（PW: BIMSA）

Organizer：Hongfei Shu, Hao Zou, Ruidong Zhu

Speaker：Jiaju Zhang Tianjin University

Abstract

Quasiparticles are collective modes in many-body systems that can mimic semiclassical particles under some circumstances. I will talk about the emergence of semiclassical features in quasiparticle states of quantum chains using two quantum information quantities: entanglement entropy and subsystem distance. I will also demonstrate how the semiclassical description fails for a different measure, Shannon entropy.

DATEMay 31, 2023

Related News

0
Semiclassical analysis, geometric representation and quantum ergodicity
AbstractQuantum Ergodicity (QE) is a classical topic in spectral geometry, which states that on a compact Riemannian manifold whose geodesic flow is ergodic with respect to the Liouville measure, the Laplacian has a density one subsequence of eigenfunctions that tends to be equidistributed. In this talk, we present the QE for unitary flat bundles. By using a mixture of semiclassical and geometr...
1
Entanglement, von Neumann algebras, and the emergence of spacetime
Learning seminar on Black Hole thermodynamicsTo gain an up-to-date understanding about the field of Black Hole thermodynamics.Please fill out the following form if you are interested to be a speaker: https://forms.gle/FcsSwXbXcCLoBxPG8For more information, please see the attached file or check at https://bimsa.net/activity/LeasemonBlaHolthe/Organizer：Bowen Zhao (BIMSA)Speaker：Hong Liu (MIT)Ti...