252 citations · 2.2k across the 89 of their papers we have counts for
6 papers · 1 filter
Matter-wave dark solitons in a double-well potential
Ryoko Ichihara, Ippei Danshita, Tetsuro Nikuni
We study stability of the first excited state of quasi-one-dimensional Bose-Einstein condensates in a double-well potential, which is called "-state". The density notch in the $…
The Bose-Hubbard ground state: extended Bogoliubov and variational methods compared with time-evolving block decimation
Ippei Danshita, Pascal Naidon
We determine the ground-state properties of a gas of interacting bosonic atoms in a one-dimensional optical lattice. The system is modelled by the Bose-Hubbard Hamiltonian. We show…
Stability of superfluid Fermi gases in optical lattices
Yoshihiro Yunomae, Ippei Danshita, Daisuke Yamamoto +2
Critical velocities of superfluid Fermi gases in optical lattices are theoretically investigated across the BCS-BEC crossover. We calculate the excitation spectra in the presence o…
Heavily Damped Motion of One-Dimensional Bose Gases in an Optical Lattice
Ippei Danshita, Charles W. Clark
We study the dynamics of strongly correlated one-dimensional Bose gases in a combined harmonic and optical lattice potential subjected to sudden displacement of the confining poten…
Creating a supersolid in one-dimensional Bose mixtures
L. Mathey, Ippei Danshita, Charles W. Clark
We identify a one-dimensional supersolid phase in a binary mixture of near-hardcore bosons with weak, local inter-species repulsion. We find realistic conditions under which such a…
Stability of superfluid and supersolid phases of dipolar bosons in optical lattices
Ippei Danshita, Carlos A. R. Sá de Melo
We perform a stability analysis of superfluid (SF) and supersolid (SS) phases of polarized dipolar bosons in two-dimensional optical lattices at high filling factors and zero tempe…