MFRG-DPIR FOR THE DISORDERED TRANSVERSE ISING MODEL

A new approximate scheme which is combined by the mean-field renormalization group theory (MFRG) with the discretized path-integral renormalization (DPIR) is employed in the study of the disordered tranverse Ising model (TIM). The critical properties of random-bonds Ising systems on a d-dimensional lattice are calculated with this new approximate scheme.     

格点稀疏Ising自旋玻璃

本文扩展自旋玻璃的SK模型,分别计算了S=1/2和S=1的格点稀疏lsing自旋玻璃的热力学参量。     

四次幂交换作用的稀疏伊辛铁磁系统

本文应用新近发展的有效场重整化群方法,研究了四次幂交换作用和自旋浓度对于稀疏伊辛(Ising)铁磁系统的居里温度的影响.     

非均匀磁场中键稀疏和各向异性的三链伊辛(Ising)带的磁性质

本文在有效场理论的框架内,讨论了健稀疏和各向异性三条链伊辛(Ising)带在非均匀磁场中的平均磁化对于磁场强度、键浓度以及各向异性交换作用的依赖关系。     

Effective Field Renormalization Group Study of Bond-Diluted Ising Ferromagnet

An effective field renormalization group (EFRG) method, which improves the results of real space renormalization group and mean-field renormalization group (MFRG) methods, is proposed for the study of the bond-diluted Ising ferromagnet.     

准一维铁磁体的非晶化效应

本文应用平均场重整化群方法,详细研究了准一维Ising铁磁体的非晶化对于系统临界行为的影响。     

格点——键稀疏各向异性平方点阵伊辛铁磁系统的热力学性质

本文在统一的有效场近似的框架内,对于格点、键均稀疏的,水平键和垂直键有不同的交换作用和占据几率的各向异性平方点阵伊辛铁磁系统,详细地计算了系统的磁化,比热和磁化率等热力学量,以及它们对于格点自旋浓度,键浓度及各向异性交换作用的函数依赖关系。     

CRYSTAL-FIELD AND TRANSVERSE-FIELD EFFECTS OF THE SPIN-ONE ISING MODEL

A mean-field approximation (MFA) is used to treat the crystal -field and transverse-field effects of the spin-1 Ising modle in the presence of longitudinal field. In spite of its simplicity, this scheme still gives the satisfied results.     

S=1 Ising自旋玻璃的晶场效应

本文应用有效场理论,直接计算了S=1、具有无规交换作用,并包含晶场效应的Ising自旋玻璃的热力学参量。     

S=1/2无规场Ising自旋玻璃

本文应用有效场理论和长程无规相互作用Ising型,讨论了S=1/2无规场自旋玻璃相的热力学参量。