Arrays of ultracold dipolar gases loaded in optical lattices are emerging as powerful quantum simulators of the many-body physics associated with the rich interplay between …
A Koga, T Higashiyama, K Inaba, S Suga… - Journal of the Physical …, 2008 - journals.jps.jp
We study ultracold fermionic atoms trapped in an optical lattice with harmonic confinement by dynamical mean-field approximation. It is demonstrated that a supersolid state, where an …
JO Austin, Z Chen, ZN Shaw, KW Mahmud… - Communications …, 2021 - nature.com
Abstract Three-dimensional (3D) strongly correlated many-body systems, especially their dynamics across quantum phase transitions, are prohibitively difficult to be numerically …
A Koga, T Higashiyama, K Inaba, S Suga… - Physical Review A …, 2009 - APS
We study ultracold fermionic atoms trapped in an optical lattice with harmonic confinement by combining the real-space dynamical mean-field theory with a two-site impurity solver. By …
T Saito, I Danshita, T Ozaki, T Nikuni - Physical Review A—Atomic, Molecular …, 2012 - APS
We study the 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 …
We study collective modes and superfluidity of spin-1 bosons with antiferromagnetic interactions in an optical lattice based on the time-dependent Ginzburg-Landau (TDGL) …
Y Toga, H Tsuchiura, M Yamashita, K Inaba… - Journal of the Physical …, 2012 - journals.jps.jp
We study the ground state properties of spin-1 bosons in a two-dimensional optical lattice by applying a variational Monte Carlo method to the S= 1 Bose–Hubbard model on a square …
T Kimura - Physical Review A—Atomic, Molecular, and Optical …, 2013 - APS
In this study, we perform a strong-coupling expansion up to third order of the hopping parameter t for the spin-1 Bose-Hubbard model with antiferromagnetic interaction. As …
R Asaoka, H Tsuchiura, M Yamashita, Y Toga - Physical Review A, 2016 - APS
We study the dynamical instabilities of superfluid flows in the S= 1 Bose-Hubbard model. The time evolution of each spin component in a condensate is calculated based on the …