Emergence and breakdown of semiclassical picture in quasiparticle excited states

by Prof. Jiaju Zhang (Tianjin University)

Friday 14 Apr 2023, 10:30 → 11:30 Asia/Shanghai

B105 (CHEP)

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 spin 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.

Bibliography: Jiaju Zhang is an associate professor at Tianjin University. He received his D.Sc. degree from Peking University in 2014 and then worked as a postdoctoral researcher at Institute of High Energy Physics Chinese Academy of Sciences, University of Milano-Bicocca, and International School for Advanced Studies (SISSA).

Tecent Meeting: 309-674-135