125 citations · 644 across the 15 of their papers we have counts for
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Quantum spin liquids
Gregoire Misguich
These notes are an introduction to a few selected theoretical ideas in the field of quantum spin liquids: classical zero modes and breakdown of the 1/S expansion, the Lieb-Schultz-…
Quantum Dimer Model on the triangular lattice: Semiclassical and variational approaches to vison dispersion and condensation
Gregoire Misguich, Frederic Mila
After reviewing the concept of vison excitations in Z_2 dimer liquids, we study the liquid-crystal transition of the Quantum Dimer Model on the triangular lattice by means of a sem…
Reduced Density Matrices and Topological Order in a Quantum Dimer Model
Shunsuke Furukawa, Gregoire Misguich, Masaki Oshikawa
Resonating valence bond (RVB) liquids in two dimensions are believed to exhibit topological order and to admit no local order parameter of any kind. This is a defining property of…
Local spin spirals in the Neel phase of La_{2-x}Sr_xCuO_4
Andreas Luscher, Gregoire Misguich, Alexander I. Milstein +1
Experimental observations of lightly doped La_{2-x}Sr_xCuO_4, x < 0.02, revealed remarkable magnetic properties such as the incommensurate noncollinear ordering (additional to the…
Systematic Derivation of Order Parameters through Reduced Density Matrices
Shunsuke Furukawa, Gregoire Misguich, Masaki Oshikawa
A systematic method for determining order parameters for quantum many-body systems on lattices is developed by utilizing reduced density matrices. This method allows one to extract…
Frustrated Quantum Magnets
Claire Lhuillier
A description of different phases of two dimensional magnetic insulators is given. The first chapters are devoted to the understanding of the symmetry breaking mechanism in the sem…