Didier Poilblanc, Philippe Corboz, 3 Norbert Schuch, and J. Ignacio Cirac Laboratoire de Physique Théorique, C.N.R.S. and Université de Toulouse, 31062 Toulouse, France Theoretische Physik, ETH-Zurich, 8093 Zurich, Switzerland Institute for Theoretical Physics, University of Amsterdam, Science Park 904 Postbus 94485, 1090 GL Amsterdam, The Netherlands Institut für Quanteninformation, RWTH Aache...

We give an account of the short-range RVB liquid phase on the triangular lattice, starting from an elementary introduction to quantum dimer models including details of the overlap expansion used to generate them. The fate of the topological degeneracy of the state under duality is discussed, as well as recent developments including its possible relevance for quantum computing. §1. Short-range R...

We present a variational matrix product state (vMPS) for the ground of spin-1/2 Heisenberg model. The MPS effectively organizes various dimer configurations, in faithful reflection resonating valence bond (RVB) picture spin liquid, with energy only 0.024% higher than exact value given by Bethe ansatz. Building on ground-state vMPS, one-spin wave function is constructed simple manner dispersion ...

“Free sorting”, in which subjects are asked to sort a set of items into groups “most similar” items, is increasingly popular as technique for profiling sets foods. However, free sorting implies an unrealistic model sample similarity: that similarity purely binary (is/is not similar) and fully transitive (similarities {A, B} {B, C} imply C}). This paper proposes new method rapid testing—the “fre...

The claims made for the Resonating Valence Bond ideas for the Cuprates in a recent paper by Anderson et al. on the basis of a variational calculation are discussed.