典型文献
Structure of continuous matrix product operator for transverse field Ising model:An analytic and numerical study
文献摘要：
We study the structure of the continuous matrix product operator(cMPO)[1]for the transverse field Ising model(TFIM).We prove TFIM's cMPO is solvable and has the form T = e-1/2(H)F.(H)F is a non-local free fermionic Hamiltonian on a ring with circumference β,whose ground state is gapped and non-degenerate even at the critical point.The full spectrum of(H)F is determined analytically.At the critical point,our results verify the state-operator-correspondence[2]in the conformal field theory(CFT).We also design a numerical algorithm based on Bloch state ansatz to calculate the low-lying excited states of general(Hermitian)cMPO.Our numerical calculations coincide with the analytic results of TFIM.In the end,we give a short discussion about the entanglement entropy of cMPO's ground state.
文献关键词：
中图分类号：
作者姓名：
Yueshui Zhang;Lei Wang
作者机构：
Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Beijing National Laboratory for Condensed Matter Physics and Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;Songshan Lake Materials Laboratory,Dongguan 523808,China
文献出处：
引用格式：
[1]Yueshui Zhang;Lei Wang-.Structure of continuous matrix product operator for transverse field Ising model:An analytic and numerical study)[J].中国物理B（英文版）,2022(11):136-157
A类：
TFIM
B类：
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AB值：
0.566027
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