238 citations · 1.9k across the 61 of their papers we have counts for
14 papers · 1 filter
Phase-diffusion dynamics in weakly coupled Bose-Einstein condensates
Erez Boukobza, Maya Chuchem, Doron Cohen +1
We study the phase-sensitivity of collisional phase-diffusion between weakly coupled Bose-Einstein condensates, using a semiclassical picture of the two-mode Bose-Hubbard model. Wh…
Vortex solitons in dipolar Bose-Einstein Condensates
I. Tikhonenkov, B. A. Malomed, A. Vardi
We predict solitary vortices in quasi-planar condensates of dipolar atoms, polarized parallel to the confinement direction, with the effective sign of the dipole-dipole interaction…
Bosonic amplification of noise-induced suppression of phase diffusion
Y. Khodorkovsky, G. Kurizki, A. Vardi
We study the effect of noise-induced dephasing on collisional phase-diffusion in the two-site Bose-Hubbard model. Dephasing of the quasi-momentum modes may slow down phase-diffusio…
Confinement controlled dissociation of a molecular Bose-Einstein condensate
I. Tikhonenkov, A. Vardi
We study the collective two-channel dissociation dynamics of a molecular Bose-Einstein condensate into bosonic fragments under tight harmonic confinement. Bose-stimulated dissociat…
Matter-wave squeezing and the generation of SU(1,1) and SU(2) coherent-states via Feshbach resonances
I. Tikhonenkov, E. Pazy, Y. B. Band +1
Pair operators for boson and fermion atoms generate SU(1,1) and SU(2) Lie algebras, respectively. Consequently, the pairing of boson and fermion atoms into diatomic molecules via F…
Anisotropic solitons in dipolar Bose-Einstein Condensates
I. Tikhonenkov, B. A. Malomed, A. Vardi
Starting with a Gaussian variational ansatz, we predict anisotropic bright solitons in quasi-2D Bose-Einstein condensates consisting of atoms with dipole moments polarized \emph{pe…
Confinement effects on the stimulated dissociation of molecular BECs
I. Tikhonenkov, A. Vardi
We show that a molecular BEC in a trap is stabilized against stimulated dissociation if the trap size is smaller than the resonance healing length . Th…
Quantum dynamics of Bose-Hubbard Hamiltonians beyond Hartree-Fock-Bogoliubov: The Bogoliubov backreaction approximation
I. Tikhonenkov, J. R. Anglin, A. Vardi
e formulate a method for studying the quantum field dynamics of ultracold Bose gases confined within optical lattice potentials, within the lowest Bloch-band Bose-Hubbard model. Ou…
Dark stationary matter-waves via parity-selective evaporation in a Tonks-Girardeau gas
H. Buljan, O. Manela, R. Pezer +2
We propose a scheme for observing dark stationary waves in a Tonks-Girardeau (TG) gas. The scheme is based on parity-selective dynamical "evaporation" of the gas via a time-depende…
Many-body effects on adiabatic passage through Feshbach resonances
I. Tikhonenkov, E. Pazy, Y. B. Band +2
We theoretically study the dynamics of an adiabatic sweep through a Feshbach resonance, thereby converting a degenerate quantum gas of fermionic atoms into a degenerate quantum gas…
Incoherent matter-wave solitons
H. Buljan, M. Segev, A. Vardi
The dynamics of matter-wave solitons in Bose-Einstein condensates (BEC) is considerably affected by the presence of a surrounding thermal cloud and by condensate depletion during i…
Nonlinear adiabatic passage from fermion atoms to boson molecules
E. Pazy, I Tikhonenkov, Y. B. Band +2
We study the dynamics of an adiabatic sweep through a Feshbach resonance in a quantum gas of fermionic atoms. Analysis of the dynamical equations, supported by mean-field and many-…
Incoherent matter-wave solitons: Mutual self-trapping of a Bose-Einstein condensate and its surrounding thermal cloud
H. Buljan, M. Segev, A. Vardi
We show that a Bose-Einstein condensate and a portion of its surrounding thermal cloud can exhibit mutual self-trapping, supported by the attractive particle interactions, and not…
Holstein model and Peierls instability in 1D boson-fermion lattice gases
E. Pazy, A. Vardi
We study an ultracold bose-fermi mixture in a one dimensional optical lattice. When boson atoms are heavier then fermion atoms the system is described by an adiabatic Holstein mode…