Takafumi Suzuki Kenji Harada Haruhiko Matsuo Synge Todo Naoki Kawashima
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS 2014 (SCES2014) 592 2015年 [査読有り]
We study thermal transitions of the generalized SU(N) Heisenberg models with four-body interactions on a square lattice and with six-body interactions on a honeycomb lattice. In both models for the N=3 and 4 cases, a singlet-dimer state is stabili...
Akiko Masaki-Kato Takafumi Suzuki Kenji Harada Synge Todo Naoki Kawashima
PHYSICAL REVIEW LETTERS 112(14) 2014年4月 [査読有り]
Based on the worm algorithm in the path-integral representation, we propose a general quantum Monte Carlo algorithm suitable for parallelizing on a distributed-memory computer by domain decomposition. Of particular importance is its application to...
Kenji Harada Takafumi Suzuki Tsuyoshi Okubo Haruhiko Matsuo Jie Lou Hiroshi Watanabe Synge Todo Naoki Kawashima
Physical Review B - Condensed Matter and Materials Physics 88(22) 2013年12月 [査読有り]
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 and six-body interactions. The quantum phase transition...
JOURNAL OF LOW TEMPERATURE PHYSICS 171(3-4) 309-314 2013年5月 [査読有り]
By performing exact quantum Monte Carlo simulations, we study the momentum distribution of the supersolid state in the two-dimensional extended Bose-Hubbard model with the nearest-neighbor repulsion. For strong nearest-neighbor repulsions, the sup...
Physical Review A - Atomic, Molecular, and Optical Physics 87(4) 042337 2013年4月 [査読有り]
We investigate entanglement generation in one-dimensional quantum spin systems with the sinusoidal deformation. In the system, the energy scale of each local term in the Hamiltonian is modified according to a position-dependent function sinα[πN(x-...
A numerical algorithm to calculate exact finite-temperature spectra of<br />
many-body lattice Hamiltonians is formulated by combining the typicality<br />
approach and the shifted Krylov subspace method. The combined algorithm, which<br />
we nam...
We study the boundary nature of trapped bosonic Mott insulators in optical<br />
square lattices, by performing quantum Monte Carlo simulation. We show that a<br />
finite superfluid density generally emerges in the incommensurate-filling (IC)<br ...
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