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典型文献
Universal order-parameter and quantum phase transition for two-dimensional q-state quantum Potts model
文献摘要：
We investigate quantum phase transitions for q-state quantum Potts models(q=2,3,4)on a square lattice and for the Ising model on a honeycomb lattice by using the infinite projected entangled-pair state algorithm with a simplified updating scheme.We extend the universal order parameter to a two-dimensional lattice system,which allows us to explore quantum phase transitions with symmetry-broken order for any translation-invariant quantum lattice system of the symmetry group G.The universal order parameter is zero in the symmetric phase,and it ranges from zero to unity in the symmetry-broken phase.The ground-state fidelity per lattice site is computed,and a pinch point is identified on the fidelity surface near the critical point.The results offer another example highlighting the connection between(i)critical points for a quantum many-body system undergoing a quantum phase-transition and(ii)pinch points on a fidelity surface.In addition,we discuss three quantum coherence measures:the quantum Jensen-Shannon divergence,the relative entropy of coherence,and the l1 norm of coherence,which are singular at the critical point,thereby identifying quantum phase transitions.
文献关键词：
中图分类号：
[1] 数理科学和化学（O） / 力学（O3） / 振动理论（O32） / 非线性振动（O322）
[2] 医药、卫生（R） / 药学（R9） / 药理学（R96） / 实验药理学（R965）
[3] 自动化技术、计算机技术（TP） / 计算技术、计算机技术（TP3） / 计算机的应用（TP39） / 信息处理(信息加工)（TP391）
作者姓名：
Yan-Wei Dai;Sheng-Hao Li;Xi-Hao Chen
作者机构：
Centre for Modern Physics and Department of Physics,Chongqing University,Chongqing 400044,China;Chongqing Vocational Institute of Engineering,Chongqing 402260,China;Research Institute for New Materials and Technology,Chongqing University of Arts and Sciences,Chongqing 400000,China
文献出处：
中国物理B（英文版）
引用格式：
[1]Yan-Wei Dai;Sheng-Hao Li;Xi-Hao Chen-.Universal order-parameter and quantum phase transition for two-dimensional q-state quantum Potts model)[J].中国物理B（英文版）,2022(07):186-191
A类：
B类：
Universal,order,parameter,quantum,phase,two,dimensional,state,Potts,We,investigate,transitions,models,square,lattice,Ising,honeycomb,using,infinite,projected,entangled,pair,algorithm,simplified,updating,scheme,extend,universal,system,which,allows,explore,symmetry,broken,translation,invariant,group,zero,symmetric,ranges,from,unity,ground,fidelity,per,site,computed,pinch,identified,surface,near,critical,results,offer,another,example,highlighting,connection,between,points,many,body,undergoing,ii,In,addition,discuss,three,coherence,measures,Jensen,Shannon,divergence,relative,entropy,l1,norm,singular,thereby,identifying
AB值：
0.496518
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