Transverse Ising model with multi-impurity
(0) We study the transverse Ising spin model with spin-1 impurities under the exact solution.We develop a universal method to deal with the multi-impurity problem by introducing a displacement quantity in the wave function and get a recursive formula to simplify the calculation of the partition function.This allows us to rigorously determine the impurity effects for a specific distribution of impurity in the thermodynamic limit.The low temperature behaviors are governed by the interplay between host and impurity excitations,and the quantum critical fluctuations around the critical point of the transverse Ising model are tuned by the transverse field and the concentration of impurity.However the impurity effects are limited,which depends on the host–impurity exchange interaction and the coupling strength of impurities.
Exact solution Impurity effect Thermodynamic property
Xuchu Huang Zhihua Yang
Key Laboratory of Functional Materials and Devices for Special Environments of CAS,Xinjiang Technica Key Laboratory of Functional Materials and Devices for Special Environments of CAS,Xinjiang Technica
国内会议
大连
英文
880-884
2016-09-24（万方平台首次上网日期，不代表论文的发表时间）