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
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发表时间:
1979
期刊:
影响因子:
--
通讯作者:
D. Mattis
中科院分区:
文献类型:
--
作者:
D. Mattis
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.