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Clues and criteria for designing a Kitaev spin liquid revealed by thermal and spin excitations of the honeycomb iridate Na 2 IrO 3
Contrary to the original expectation, ${\mathrm{Na}}_{2}{\mathrm{IrO}}_{3}$ is not a Kitaev's quantum spin liquid (QSL) but shows a zigzag-type antiferromagnetic order in experiments. Here, weExpand
Possibility of deconfined criticality in SU(N) Heisenberg models at small N
To examine the validity of the scenario of the deconfined critical phenomena, we carry out a quantum Monte Carlo simulation for the SU($N$) generalization of the Heisenberg model with four-body andExpand
Effective model with strong Kitaev interactions for α -RuCl 3
We use an exact numerical diagonalization method to calculate the dynamical spin structure factors of three ab initio models and one ab initio guided model for a honeycomb-lattice magnetExpand
Ground-State Phase Diagram of the Two-Dimensional Extended Bose-Hubbard Model
Research Center for Nano-Micro Structure Science and Engineering,Graduate School of Engineering, University of Hyogo, Himeji, Hyogo 671-2280, Japan(Dated: June 19, 2012)We investigate theExpand
Thermal phase transition of generalized Heisenberg models for SU(N) spins on square and honeycomb lattices
We investigate thermal phase transitions to a valence-bond solid phase in SU(N) Heisenberg models with four- or six-body interactions on a square or honeycomb lattice, respectively. In both cases, aExpand
Modification of directed-loop algorithm for continuous space simulation of bosonic systems.
The directed-loop algorithm (DLA) is modified to solve the problem that typically arises from large on-site interaction when one tries to simulate a Bose gas system in continuum by discretizing the space with small lattice spacings. Expand
Study of the Shastry Sutherland Model Using Multi-scale Entanglement Renormalization Ansatz
We performed variational calculation based on the multi-scale entanglemnt renormalization ansatz, for the antiferromagnetic Heisenberg model on a Shastry Sutherland lattice (SSL). Our results showExpand
Quantum phases of hard-core bosons on two-dimensional lattices with anisotropic dipole-dipole interaction
By using an unbiased quantum Monte Carlo method, we investigate the hard-core Bose-Hubbard model on a square lattice with anisotropic dipole-dipole interaction. To study the effect of the anisotropy,Expand
Gapless edge states and their stability in two-dimensional quantum magnets
We study the nature of edge states in extrinsically and spontaneously dimerized states of two-dimensional spin-$\frac{1}{2}$ antiferromagnets, by performing quantum Monte Carlo simulation. We showExpand