学术报告

学术活动

学术报告
06/09 2025 Seminar
  • Title题目 Nonequilibrium Time Evolution in an Ising Chain with Periodically Driven Transverse Field
  • Speaker报告人 王骁/Xiao Wang (上海交通大学)
  • Date日期 2025年6月9日 14:00
  • Venue地点 北楼322, 腾讯会议: 569-527-225, 蔻享直播链接: https://www.koushare.com/live/details/43580
  • Abstract摘要

    Motivated by the recent rapid development of Rydberg atom experiments, in this talk, I will discuss the nonequilibrium time evolution process of a quantum Ising chain subjected to a slowly rotating transverse field and a small longitudinal field. When the longitudinal field is set to zero, the corresponding magnetization oscillations are found to be explained by the contributions from various particle excitations of the quantum E₈ integrable model. When turning on the longitudinal field, a competition between the rotation frequency and the longitudinal field strength leads to a transition between local adiabatic time evolution and many-body Landau-Zener tunneling process. This process is characterized by an effective energy gap arising from the quantum geometric potential and the instantaneous energy gap. I will explain in detail how the quantum geometric potential changes the tunneling behavior as the rotation frequency and longitudinal field strength vary.

    Biography

    Xiao Wang recently obtained his Ph.D. from the Condensed Matter Division of Tsung-Dao Lee Institute at Shanghai Jiao Tong University, under the supervision of Professor Jianda Wu. His research interests include conformal field theory and integrable models, along with their applications in nonequilibrium systems.

    Inviter: Ning Xi



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