Frustrated Ferromagnetic Spin Chain near the Transition Point

作     者：ZHU Ren-Gui 朱仁贵

作者机构：College of Physics and Electronic InformationAnhui Normal UniversityWuhu 241000 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2011年第28卷第9期

页      面：229-232页

核心收录：

学科分类：07[理学] 0701[理学-数学] 070101[理学-基础数学] 

基　　金：by the Natural Science Research Foundation of the Higher Education Institutions of Anhui Province under Grant No KJ2010A131 

主　　题：ferromagnetic quantum Transition 

摘      要：The one-dimensional quantum spin-1/2 model with nearest-neighbor ferromagnetic and next-nearest-neighbor antiferromagnetic interaction is *** Hamiltonian is firstly rewritten in a form with rotated spin operators,then bosonized by using the linear spin wave approximation and then treated by using the Green function *** integral expression of the quantum correction to the classical ground state energy is *** critical behavior of the ground state energy in the vicinity of the transition point from the ferromagnetic to the singlet ground state is analyzed by numerical calculation and the result is−8γ^(2).