Time：14:00-15:00, Monday, April 15 2024
Venue：E4-233, Yungu Campus
Host：Congjun Wu, ITS
Speaker：ZhuoYu Xian, University ofWürzburg
Biography：ZhuoYu Xian got his Ph.D. degree from the Institute of High Energy Physics (IHEP), Chinese Academy of Science (CAS) in 2018. After that, he worked as a postdoc at the Institute of Theoretical Physics (ITP), CAS, and the Julius-Maximilians-University of Würzburg. Recently, he is interested in holography, the SYK model, and quantum chaos.
Title：Dynamics of entanglement and operator in black holes or the SYK model coupled to an environment
Abstract：We investigate the evolution of entanglement and Heisenberg operators within open and strongly coupled systems interacting with their environment, in gravity and the Sachdev-Ye-Kitaev (SYK) model. In both cases, the entanglement within the system initially increases as a result of interior interactions and eventually dissipates into the environment. We also study the operator size growth in the Lindbladian SYK model and analytically obtain the suppression of the growth rate due to dissipation, which describes the quantum chaos in an open system. The dynamic behaviors of the entanglement and the operator size observed in these two models are attributable to the competition between the interior interaction of the system and the exterior interaction with the environment.
