PKU HEP Seminar and Workshop (北京大学高能物理组)

The Quantum Field Theory in Condensed Matter Physics

by Dr Chen Yu (Graduate School of China Academy of Engineering Physics)

Asia/Shanghai
B105 (CHEP)

B105

CHEP

Description

对于高能物理的研究者,量子场论一直是大家的工作基础和起点。我们的讲座将以量子相变的研究、拓扑态物理的研究、对称性普适性的研究、动力学研究以及以信息为主体的动力学研究来展示当我们熟知的量子场论在失去Lorentz对称性的保护,或者不受可重整化约束等等情况下会呈现出哪些新奇的特征。从实验的角度,我们也发现凝聚态系统提供了一些完全不同于粒子物理的观测手段。我们将通过比较凝聚态场论和高能场论中的同与不同来实现一种高能物理与凝聚态物理的对话,以及双向理解。

For researchers in high-energy physics, quantum field theory has consistently served as the foundational framework and starting point of their work. This lecture series will demonstrate through investigations of quantum phase transitions, topological states of matter, symmetry universality, dynamical studies, and information-oriented dynamic research, the novel characteristics that emerge when conventional quantum field theory is deprived of the protection of Lorentz symmetry or liberated from renormalizability constraints. From an experimental perspective, we further recognize that condensed matter systems provide fundamentally distinct observational methodologies compared to particle physics. By systematically comparing and contrasting condensed matter field theories with their high-energy counterparts, we aim to establish an intellectual dialogue between high-energy physics and condensed matter physics, facilitating bidirectional comprehension. Specifically, this comparative approach will illuminate how different physical realizations of quantum field principles in disparate energy regimes yield complementary perspectives on emergent phenomena, symmetry breaking patterns, and non-perturbative effects.

Bio:
陈宇,2012年毕业于北京大学物理学院,获得博士学位。师从田光善老师,主要研究凝聚态中的强关联现象。2012-2015年在清华大学高等研究院做博士后工作,2015年到2019年在首都师范大学工作后于2020年转入中物院研究生院至今。他主要的研究兴趣在量子临界现象、无序与混沌、拓扑态以及量子开放系统。主要的研究成果包括发现了量子混沌中Planck常数驱动的整数量子霍尔效应(即动力学Anderson拓扑绝缘体)、空腔中稳态超辐射的统计效应、准晶形成和稳定机制上的间接共振效应,建立了一套以耗散响应为基础的测量理论框架。

Dr. Yu Chen received his Ph.D. in Physics from Peking University in 2012 under the supervision of Prof. Guangshan Tian, specializing in strongly correlated phenomena in condensed matter systems. He conducted postdoctoral research at the Institute for Advanced Study, Tsinghua University from 2012 to 2015, subsequently holding academic positions at Capital Normal University (2015-2019) before joining the Graduate School of China Academy of Engineering Physics in 2020, where he currently resides. His primary research interests encompass quantum critical phenomena, disorder and chaos, topological states, and open quantum systems. Notable scientific contributions include: the discovery of Planck constant-driven integer quantum Hall effects in quantum chaos (termed dynamical Anderson topological insulators), statistical effects of steady-state superradiance in cavity systems, indirect resonance effects governing quasicrystal formation and stabilization mechanisms, and the establishment of a measurement theoretical framework based on dissipative response.

Organised by

Zhicheng Yang