Majorana's stellar representation for the quantum geometric tensor of symmetric states

查看全文 作　　者：Xingyu [1]Zhang;Jiancheng [1]Pei;Libin [2]Fu;Xiaoguang [1,3]Wang 机构地区：[1]Zhejiang Institute of Modern Physics,Department of Physics,Zhejiang University,Hangzhou 310027,China;[2]National Laboratory of Science and Technology on Computational Physics,Institute of Applied Physics and Computational Mathematics,Beijing 100088,China;[3]Graduate School of China Academy of Engineering Physics,Beijing 100193,China 出　　处：《Communications in Theoretical Physics》索引2022年第74卷第6期,共8页 基　　金：supported by the National Key Research and Development Program of China(Grants No.2017YFA0304202 and No.2017YFA0205700);the NSFC(Grants No.11875231 and No.11935012);the Fundamental Research Funds for the Central Universities through Grant No.2018FZA3005。 摘　　要：Majorana's stellar representation provides an intuitive picture in which quantum states in highdimensional Hilbert space can be observed using the trajectory of Majorana stars.We consider the Majorana's stellar representation of the quantum geometric tensor for a spin state up to spin-3/2.The real and imaginary parts of the quantum geometric tensor,corresponding to the quantum metric tensor and Berry curvature,are therefore obtained in terms of the Majorana stars.Moreover,we work out the expressions of quantum geometric tensor for arbitrary spin in some important cases.Our results will benefit the comprehension of the quantum geometric tensor and provide interesting relations between the quantum geometric tensor and Majorana's stars. 关 键 词：quantum geometric tensor Berry curvature quantum metric tensor Majorana's stellar representation