Mixtures of strongly interacting bosons in optical lattices

P Buonsante, SM Giampaolo, F Illuminati, V Penna… - Physical review …, 2008 - APS
We investigate the properties of strongly interacting heteronuclear boson-boson mixtures
loaded in realistic optical lattices, with particular emphasis on the physics of interfaces. In …

Dynamics of an itinerant spin-3 atomic dipolar gas in an optical lattice

P Fersterer, A Safavi-Naini, B Zhu, L Gabardos… - Physical Review A, 2019 - APS
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 …

Supersolid state of ultracold fermions in optical lattice

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 …

Quantum critical dynamics in a spinor Hubbard model quantum simulator

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 …

Supersolid state in fermionic optical lattice systems

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 …

Detecting the superfluid critical momentum of Bose gases in optical lattices through dipole oscillations

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 …

Stability of supercurrents in a superfluid phase of spin-1 bosons in an optical lattice

S Yamashika, R Yoshii, S Tsuchiya - Physical Review A, 2021 - APS
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) …

Mott transition and spin structures of spin-1 bosons in two-dimensional optical lattice at unit filling

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 …

Strong-coupling expansion for the spin-1 Bose-Hubbard model

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 …

Dynamical instability in the Bose-Hubbard model

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 …