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Monte Carlo study of degenerate groundstates and residual entropy in a frustrated honeycomb lattice Ising model
Shawn Andrews, Hans De Sterck, Stephen Inglis +1
We study a classical fully-frustrated honeycomb lattice Ising model using Markov chain Monte Carlo methods and exact calculations . The Hamiltonian realizes a degenerate ground sta…
Superfluid and supersolid phases of lattice bosons with ring-exchange interaction
Robert Schaffer, Anton A. Burkov, Roger G. Melko
We examine the superfluid phase of a hard-core boson model with nearest-neighbor exchange J and four-particle ring-exchange K at half-filling on the square lattice. At zero tempera…
Imaging bond order near non-magnetic impurities in square lattice antiferromagnets
Ribhu K. Kaul, Roger G. Melko, Max A. Metlitski +1
We study the textures of generalized "charge densities" (scalar objects invariant under time reversal), in the vicinity of non-magnetic impurities in square-lattice quantum anti-fe…
Large-N estimates of universal amplitudes of the CP^{N-1} theory and comparison with the JQ model
Ribhu K. Kaul, Roger Melko
We present computations of certain finite-size scaling functions and universal amplitude ratios in the large-N limit of the CP^{N-1} field theory. We pay particular attention to th…