252 citations · 2.2k across the 89 of their papers we have counts for
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Magnon Supersolid and Anomalous Hysteresis in Spin Dimers on a Triangular Lattice
Daisuke Yamamoto, Ippei Danshita
We study the magnetic phase diagram and hysteresis behavior of weakly coupled spin dimers on a triangular lattice using the cluster mean-field method with cluster-size scaling. We…
Bose-Bose mixtures in an optical lattice: First-order superfluid-insulator transition and elementary excitations
Takeshi Ozaki, Ippei Danshita, Tetsuro Nikuni
We study ground-state phase diagrams and excitation spectra of Bose-Bose mixtures in an optical lattice by applying the Gutzwiller approximation to the two-component Bose-Hubbard m…
Quantum phases of hardcore bosons with long-range interactions on a square lattice
Daisuke Yamamoto, Akiko Masaki, Ippei Danshita
We study the ground-state phase diagrams of hardcore bosons with long-range interactions on a square lattice using the linear spin-wave theory and a cluster mean-field method. Spec…
Counterflow superfluid of polaron pairs in Bose-Fermi mixtures in optical lattices
Ippei Danshita, L. Mathey
We study the quantum phases of one-dimensional Bose-Fermi mixtures in optical lattices. Assuming repulsive interparticle interactions, equal mass, and unit total filling, we calcul…
Detecting the superfluid critical momentum of Bose gases in optical lattices through dipole oscillations
Takuya Saito, Ippei Danshita, Takeshi Ozaki +1
We study stability of superflow of Bose gases in optical lattices by analyzing the Bose-Hubbard model within the Gutzwiller mean-field approximation. We calculate the excitation sp…