2D Multipartite Valence Bond States in Quantum Antiferromagnets

Details 2D Multipartite Valence Bond States in Quantum Antiferromagnets 2D Multipartite Valence Bond States in Quantum Antiferromagnets

2007-10-12

arxiv.org/abs/0710.2349v2

AnnalsPhys.323:2115-2131,2008

Physics

Condensed Matter

Strongly Correlated Electrons

16 pages, 8 figures. References added, some typos corrected. Published version

Scientific paper

10.1016/j.aop.2008.03.006

A quantum anti-ferromagnetic spin-1 model is characterised on a 2D lattice with the following requirements: i) The Hamiltonian is made out of nearest neighbour interactions. ii) It is homogeneous, translational and rotational invariant. iii) The ground state is a real singlet state of SU(2) (non-chiral). iv) It has a local spin-1 representation. Along the way to characterise the system, connections with classical statistical mechanics and integrable models are explored. Finally, the relevance of the model in the physics of low dimensional anti-ferromagnetic Mott-Hubbard insulators is discussed.

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