报告题目：Towards quantum thermalization and hydrodynamization of Quark Gluon Plasma
报告时间：2026年7月24日下午15:00
报告地点：闵行校区物理楼223会议室
报告人：陈诗乐 博士后
邀请人：周先荣 教授
报告人单位：意大利国家核物理研究院
报告人简介：
The speaker is now a postdoc in LNS, INFN, Italy, and got her PHD degree from Tsinghua University. Her research interest mainly focus on high energy physics. The research themes include heavy quark static and dynamic properties under external field, heavy quark transport, hydrodynamic attractor, application of neural network in high energy physics and quantum simulating of field theory.
报告摘要：
Thermalization of the quark gluon plasma (QGP) created in relativistic heavy-ion collisions is a crucial theoretical question in understanding the onset of hydrodynamics, and in a broad sense, a key step to the exploration of thermalization in quantum many body systems. Addressing this problem theoretically, in a first principle manner, requires a real-time, non-perturbative method. To this end, we carry out a fully quantum simulation on a classical hardware, of a massive Schwinger model, which well mimics QCD as it shares the important properties such as confinement and chiral symmetry breaking. We focus on the real-time evolution of the Wigner function, which is the Wigner—Weyl transformation of the gauge-invariant two-point correlation function and it serves as the quantum analogy of the quark distribution function in phase space. The system tends to thermalize in the strong-coupling case, but not the weak-coupling ones. We also study the connection of the Wigner function thermalization to the Eigenstate Thermalization (ETH). Under the help of tensor network, we further analysing the hydrodynamic behavior analogous to Bjorken flow at large coupling-to-mass ratio, a signature that diminishes as the coupling weakens, or mass increases. In addition, by examining the evolution of the electric field and charge density, we observe the signal of spontaneous parity symmetry breaking phase transition in a dynamical system. Finally, we extend the description to momentum space to see the kinetic properties of a 1D system.