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Singlets and reflection symmetric spin systems

Author

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  • Lieb, Elliott H.
  • Schupp, Peter

Abstract

We rigorously establish some exact properties of reflection symmetric spin systems with antiferromagnetic crossing bonds: At least one ground state has total spin zero and a positive semidefinite coefficient matrix. The crossing bonds obey an ice rule. This augments some previous results which were limited to bipartite spin systems and is of particular interest for frustrated spin systems.

Suggested Citation

  • Lieb, Elliott H. & Schupp, Peter, 2000. "Singlets and reflection symmetric spin systems," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 279(1), pages 378-385.
    • Handle: RePEc:eee:phsmap:v:279:y:2000:i:1:p:378-385
    DOI: 10.1016/S0378-4371(99)00521-X
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