241 citations · 541 across the 22 of their papers we have counts for
22 papers
Z topological number of local quantum clusters in the orthogonal dimer model
Isao Maruyama, Sho Tanaya, Mitsuhiro Arikawa +1
We have studied the topological number defined by the Berry phase for the gapped frustrated systems including the orthogonal dimer model which has a direct product state of l…
Spectral Properties of Interacting One-Dimensional Spinless Fermions
Masanori Kohno, Mitsuhiro Arikawa, Jun Sato +1
The spectral properties of the spinless fermion model with nearest-neighbor repulsive interactions on a one-dimensional lattice are investigated using the Bethe ansatz. Although it…
Topological quantum phase transition in the BEC-BCS crossover phenomena
Mitsuhiro Arikawa, Isao Maruyama, Yasuhiro Hatsugai
A crossover between the Bose Einstein condensation (BEC) and BCS superconducting state is described topologically in the chiral symmetric fermion system with attractive interaction…
Gapped state in three-leg Heisenberg tube
S. Nishimoto, M. Arikawa
We study the ground state of three-leg Heisenberg tube using the density-matrix renormalization group method. The dimerization order-parameter and spin-excitation gap are c…
Edge states of Spin-1/2 Two-Leg Ladder with Four-Spin Ring Exchange
Mitsuhiro Arikawa, Shou Tanaya, Isao Maruyama +1
A topological insulator and its spin analogue as a gapped spin liquid have characteristic low energy excitations (edge states) within the gap when the systems have boundaries. This…
Dynamics in two-leg spin ladder with a four-spin cyclic interaction
S. Nishimoto, M. Arikawa
We study two-leg Heisenberg ladder with four-spin cyclic interaction using the (dynamical) density-matrix renormalization group method. We demonstrate the dependence of the low-lyi…