【报告题目】 Universal Thermodynamic Signature of Self-dual Quantum Critical Points
【报 告 人】 Dr. Long Zhang
University of Chinese Academy of Sciences
【时 间】 2019-12-02 2:00 pm (Monday)
【地 点】 北园106报告厅
【报告摘要】
Self-duality is an elegant algebraic structure of certain critical theories, which is not encoded in the scaling dimensions and critical exponents. In this talk, I will propose a universal thermodynamic signature of self-dual quantum critical points (QCPs). It is shown that the Gruneisen ratio at a self-dual QCP remains finite as in the zero-temperature limit, which is in sharp contrast to its universal divergence at a generic QCP without self-duality. This conclusion is drawn based on the hyperscaling theory near the QCP, and has far-reaching implications for experiments and numerical simulations.
【报告人简介】 Long Zhang obtained B.Sc. and Ph.D. in physics from Tsinghua University in 2010 and 2015. After a two-year postdoc in Peking University, he joined Kavli Institute for Theoretical Sciences in University of Chinese Academy of Sciences as a junior faculty. His research interest is theoretical condensed matter physics, including strongly correlated electron systems and quantum critical phenomena.
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