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

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