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cond-mat.str-el2004
Two Step Restoration of SU(2) Symmetry in a Frustrated Ring-Exchange Magnet
A. Laeuchli, J. C. Domenge, C. Lhuillier +2
We demonstrate the existence of a spin-nematic, moment-free phase in a quantum four-spin ring exchange model on the square lattice. This unusual quantum state is created by the int…
cond-mat.str-el2004★ 10 cited
Quantum dimer model with Z_2 liquid ground-state: interpolation between cylinder and disk topologies and toy model for a topological quantum-bit
Gregoire Misguich, Vincent Pasquier, Frederic Mila +1
We consider a quantum dimer model (QDM) on the kagome lattice which was introduced recently [Phys. Rev. Lett. 89, 137202 (2002)]. It realizes a Z_2 liquid phase and its spectrum wa…