Ground-State Symmetry in XY Model of Magnetism

Ground-State Symmetry in XY Model of Magnetism
复制标题

XY 磁学模型中的基态对称性

DOI:
10.1103/physrevlett.42.1503
复制
发表时间:
1979
期刊:
--
影响因子:
--
通讯作者:
D. Mattis
D. Mattis
中科院分区:
--
文献类型:
--
作者:
D. Mattis

文献摘要

被引文献

相似文献

Betts和Oitmaa的数值研究使这些作者推测在XY模型中基态磁化M z为零。这是一个具有相互作用− J(S n x S m x+ S n y S m y)的晶格自旋模型,也可以描述硬球玻色子流体。本文证明了对任意自旋S= 12,1,32,.,对正J的猜想,并讨论了各种推广.
Numerical studies by Betts and Oitmaa have led those authors to conjecture that in the XY model the ground-state magnetization M z is zero. This is a model of spins on a lattice with interactions− J (S n x S m x+ S n y S m y), that can also describe a hard-sphere boson fluid. In the present note I prove the conjecture for arbitrary spins S= 1 2, 1, 3 2,… for positive J, and treat various generalizations.