19 citations · 54 across the 5 of their papers we have counts for
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Correlation Effects on Atom Density Profiles of 1-D and 2-D Polarized Atomic-Fermi-Gas Loaded on Optical Lattice
M. Machida, S. Yamada, M. Okumura +2
We investigate effects of optical lattice potential in one- and two-dimensional two-component trapped Fermi gases with population imbalances. Using the exact diagonalization and th…
Hole Localization in One-Dimensional Doped Anderson-Hubbard Model
M. Okumura, S. Yamada, N. Taniguchi +1
We study the interplay of disorder and correlation in the one-dimensional hole-doped Hubbard-model with disorder (Anderson-Hubbard model) by using the density-matrix renormalizatio…
Stripe Formation in Fermionic Atoms on 2-D Optical Lattice inside a Box Trap: DMRG Studies for Repulsive Hubbard Model with Open Boundary Condition
M. Machida, M. Okumura, S. Yamada
We suggest that box shape trap enables to observe intrinsic properties of the repulsive Hubbard model in a fixed doping in contrast to the harmonic trap bringing about spatial vari…
Direct Extension of Density-Matrix Renormalization Group toward 2-Dimensional Quantum Lattice Systems: Studies for Parallel Algorithm, Accuracy, and Performance
S. Yamada, M. Okumura, M. Machida
We parallelize density-matrix renormalization group to directly extend it to 2-dimensional (-leg) quantum lattice models. The parallelization is made mainly on the exact diagona…
Comment on "Novel Superfluidity in a Trapped Gas of Fermi Atoms with Repulsive Interaction Loaded on an Optical Lattice"
M. Rigol, S. R. Manmana, A. Muramatsu +3
In a recent letter Machida et al. [Phys. Rev. Lett. 93, 200402 (2004)] concluded that in a trapped gas of fermions with repulsive interactions a superfluid phase appears around the…