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cond-mat.str-el2008★ 3 cited
Valence Bond States: Link models
E. Rico, R. Hübener, S. Montangero +4
An isotropic anti-ferromagnetic quantum state on a square lattice is characterized by symmetry arguments only. By construction, this quantum state is the result of an underlying va…
cond-mat.str-el2007★ 9 cited
2D Multipartite Valence Bond States in Quantum Antiferromagnets
E. Rico, H. J. Briegel
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…
cond-mat.str-el2006
Scale perturbation in valence bond ground states
E. Rico
A simple and efficient method for calculating the ground state for a class of antiferromagnet systems is presented. It combines the valence bond structure of the ground state for t…