From Complexification to Self-Similarity:New Aspects of Quantum Criticality  

作　　者：Yang Liu Erhai Zhao Haiyuan Zou 刘洋;Erhai Zhao;邹海源(Key Laboratory of Polar Materials and Devices(MOE),School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China;Department of Physics and Astronomy,George Mason University,Fairfax,Virginia 22030,USA)

机构地区：[1]Key Laboratory of Polar Materials and Devices(MOE),School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China [2]Department of Physics and Astronomy,George Mason University,Fairfax,Virginia 22030,USA

出　　处：《Chinese Physics Letters》2024年第10期1-7,共7页中国物理快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.12274126);the support from NSF grant PHY-206419;AFOSR grant FA9550-23-1-0598。

摘　　要：Quantum phase transitions are a fascinating area of condensed matter physics.The extension through complexification not only broadens the scope of this field but also offers a new framework for understanding criticality and its statistical implications.This mini review provides a concise overview of recent developments in complexification,primarily covering finite temperature and equilibrium quantum phase transitions,as well as their connection with dynamical quantum phase transitions and non-Hermitian physics,with a particular focus on the significance of Fisher zeros.Starting from the newly discovered self-similarity phenomenon associated with complex partition functions,we further discuss research on self-similar systems briefly.Finally,we offer a perspective on these aspects.

关 键 词：TRANSITIONS QUANTUM PARTITION 

分 类 号：O469[理学—凝聚态物理]