35 citations · 72 across the 4 of their papers we have counts for
4 papers
Adiabatic Loading of Cold Bosons in Three-Dimensional Optical Lattices and Superfluid-Normal Phase Transition
S. Yoshimura, S. Konabe, T. Nikuni
We investigate the effects of the adiabatic loading of optical lattices to the temperature by applying the mean-field approximation to the three-dimensional Bose-Hubbard model at f…
Coarse-Grained Finite-Temperature Theory for the Condensate in Optical Lattices
Satoru Konabe, Tetsuro Nikuni
In this work, we derive a coarse-grained finite-temperature theory for a Bose condensate in a one-dimensional optical lattice, in addition to a confining harmonic trap potential. W…
Instability of a superfluid Bose gas induced by a locked thermal gas in an optical lattice
Satoru Konabe, Tetsuro Nikuni
We use a dissipative Gross-Petaevskii equation derived from the Bose-Hubbard Hamiltonian to study the effect of the thermal component on the stability of a current-carrying superfl…
Laser probing of single-particle energy gap of a Bose gas in an optical lattice in the Mott insulator phase
S. Konabe, T. Nikuni, M. Nakamura
We study single-particle excitations in the Mott insulator phase of a Bose gas in an optical lattice. The characteristic feature of the single-particle spectrum in the Mott insulat…