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Biography (只提供英文版)

  • Associate Professor in Department of Physics at The Chinese University of Hong Kong
  • Research mainly focuses on exploring topological phenomena in strongly correlated systems, and also includes various other topics such as quantum gravity and neutrino mass mixing problems
  • RFS project - to explore new universality classes of topological phase transitions and deconfined quantum critical points (DQCPs) in realistic systems. Simultaneously, Professor Gu and his team will search for experimental evidence of topological phase transitions or DQCPs, examining their potential implications in fundamental physics
  • Awards and Honours:
    • RGC Research Fellow (2023)
    • CUHK Research Excellence Award (2021)
    • RGC Early Career Award (2016)

Project Title (只提供英文版)

  • Topological Phase Transition and Quantum Criticality: Beyond Landau's Paradigm

赞词

在过去的十年中,顾教授和他的合作者基于长程纠缠的概念,建立了量子物质拓扑相的新范式。特别是,他们提出了一类受对称性保护的新型拓扑相——对称性保护拓扑相(SPT),为2016年诺贝尔物理学奖做出了重大贡献。

 

加入中大后,顾教授的团队进一步发展新的数学语言,如一般群超上同调理论,用来对相互作用费米子系统中的SPT相进行分类。此外,顾教授及其合作者还指出,长程纠缠可以局部编码在一类特殊的波函数——张量网络态(TNS)中。他们进一步开发了一种准确有效的方法——纠缠过滤重正化群(EFRG)来计算TNS物理量。这种方法有可能解决受挫磁体中量子自旋液体(QSL)的出现和高温超导体的关键机制。

 

顾教授及其团队将运用范畴对称性和全息原理,以深入探讨高维度中的拓扑相变,尤其在相互作用费米子系统中。通过张量网络模拟,他们将探索现实系统中的拓扑相变和解禁量子临界点(DQCP)新普适类别。同时,他们亦将积极寻找拓扑相变或DQCP的实验理据,拓展它们在基础物理学中的潜在意义。通过超越传统的Landau范式,该研究项目将揭示拓扑相变和DQCP的真正本质,对香港的基础研究领域产生深远影响。