典型文献
Orthogonality catastrophe and the speed of quantum evolution in a qubit-spin-bath system
文献摘要：
The orthogonality catastrophe(OC)of quantum many-body systems is an important phenomenon in condensed matter physics.Recently,an interesting relationship between the OC and the quantum speed limit(QSL)was shown(Fogarty 2020 Phys.Rev.Lett.124 110601).Inspired by the remarkable feature,we provide a quantitative version of the quantum average speed as another different method to investigate the measure of how it is close to the OC dynamics.We analyze the properties of an impurity qubit embedded into an isotropic Lipkin-Meshkov-Glick spin model,and show that the OC dynamics can also be characterized by the average speed of the evolution state.Furthermore,a similar behavior of the actual speed of quantum evolution and the theoretical maximal rate is shown which can provide an alternative speed-up protocol allowing us to understand some universal properties characterized by the QSL.
文献关键词：
中图分类号：
作者姓名：
Qing Wang;Zheng-Rong Zhu;Jian Zou;Bin Shao
作者机构：
School of Physics,Beijing Institute of Technology,Beijing 100081,China;Yangtze Delta Region Academy of Beijing Institute of Technology,Jiaxing 314019,China
文献出处：
引用格式：
[1]Qing Wang;Zheng-Rong Zhu;Jian Zou;Bin Shao-.Orthogonality catastrophe and the speed of quantum evolution in a qubit-spin-bath system)[J].理论物理,2022(11):84-89
A类：
Lipkin,Glick
B类：
Orthogonality,catastrophe,speed,quantum,evolution,qubit,spin,bath,orthogonality,OC,many,body,systems,important,phenomenon,condensed,matter,physics,Recently,interesting,relationship,between,limit,QSL,was,shown,Fogarty,Phys,Rev,Lett,Inspired,by,remarkable,feature,provide,quantitative,version,average,another,different,method,investigate,measure,close,dynamics,We,analyze,properties,impurity,embedded,into,isotropic,Meshkov,model,that,can,also,characterized,state,Furthermore,similar,behavior,actual,theoretical,maximal,rate,which,alternative,up,protocol,allowing,us,understand,some,universal
AB值：
0.578966
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