264 citations · 3.7k across the 65 of their papers we have counts for
5 papers · 1 filter
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…
Specific heat of the S=1/2 Heisenberg model on the kagome lattice: high-temperature series expansion analysis
Gregoire Misguich, Bernard Bernu
We compute specific heat of the antiferromagnetic spin-1/2 Heisenberg model on the kagome lattice. We use a recently introduced technique to analyze high-temperature series expansi…
Soliton binding and low-lying singlets in frustrated odd-legged S=1/2 spin tubes
Andreas Luscher, Reinhard M. Noack, Gregoire Misguich +2
Motivated by the intriguing properties of the vanadium spin tube Na2V3O7, we show that an effective spin-chirality model similar to that of standard Heisenberg odd-legged S=1/2 spi…
Bose-Einstein Condensation of Magnons in TlCuCl3: Phase diagram and specific heat from a self-consistent Hartee-Fock calculation with a realistic dispersion relation
Gregoire Misguich, Masaki Oshikawa
We extend the self-consistent Hartree-Fock-Popov calculations by Nikuni et al. [Phys. Rev. Lett. 84, 5868 (2000)] concerning the Bose-Eistein condensation of magnons in TlCuCl3 to…
Cyclic exchange, isolated states and spinon deconfinement in an XXZ Heisenberg model on the checkerboard lattice
Nic Shannon, Gregoire Misguich, Karlo Penc
The antiferromagnetic Ising model on a checkerboard lattice has an ice-like ground state manifold with extensive degeneracy. and, to leading order in J_xy, deconfined spinon excita…