典型文献
Biorthogonal quantum criticality in non-Hermitian many-body systems
文献摘要：
We develop the perturbation theory of the fidelity susceptibility in biorthogonal bases for arbitrary interacting non-Hermitian many-body systems with real eigenvalues.The quantum criticality in the non-Hermitian transverse field Ising chain is investigated by the second derivative of the ground-state energy and the ground-state fidelity susceptibility.We show that the system undergoes a second-order phase transition with the Ising universal class by numerically computing the critical points and the critical exponents from the finite-size scaling theory.Interestingly,our results indicate that the biorthogonal quantum phase transitions are described by the biorthogonal fidelity susceptibility instead of the conventional fidelity susceptibility.
文献关键词：
中图分类号：
作者姓名：
Gaoyong Sun;Jia-Chen Tang;Su-Peng Kou
作者机构：
College of Science,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;Key Laboratory of Aerospace Information Materials and Physics(Nanjing University of Aeronautics and Astronautics),MIIT,Nanjing 211106,China;Center for Advanced Quantum Studies,Department of Physics,Beijing Normal University,Beijing 100875,China
文献出处：
引用格式：
[1]Gaoyong Sun;Jia-Chen Tang;Su-Peng Kou-.Biorthogonal quantum criticality in non-Hermitian many-body systems)[J].物理学前沿,2022(03):53-61
A类：
Biorthogonal,biorthogonal
B类：
quantum,criticality,Hermitian,many,body,systems,We,develop,perturbation,theory,fidelity,susceptibility,bases,arbitrary,interacting,real,eigenvalues,transverse,field,Ising,chain,is,investigated,by,second,derivative,ground,state,energy,show,that,undergoes,order,phase,universal,class,numerically,computing,points,exponents,from,finite,size,scaling,Interestingly,our,results,indicate,transitions,are,described,instead,conventional
AB值：
0.515927
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