Results 1 to 10 of about 1,422 (47)
Kinetic theory and dynamic structure factor of a condensate in the random phase approximation [PDF]
, 2004 We present the microscopic kinetic theory of a homogeneous dilute Bose condensed gas in the generalized random phase approximation (GRPA), which satisfies the following requirements: 1) the mass, momentum and energy conservation laws; 2) the H-theorem; 3)
A. J. Leggett +10 more
core +1 more source
New Journal of Physics, 2015 We numerically generate and then study the basic properties of dark soliton-like excitations in a dipolar gas confined in a quasi one-dimensional trap. These excitations, although very similar to dark solitons in a gas with contact interaction, interact ...
Krzysztof Pawłowski +1 more
doaj +1 more source
Thermometry precision in strongly correlated ultracold lattice gases
New Journal of Physics, 2015 The precise knowledge of the temperature of an ultracold lattice gas simulating a strongly correlated system is a question of both fundamental and technological importance. Here, we address such question by combining tools from quantum metrology together
M Mehboudi +3 more
doaj +1 more source
Strongly interacting Bose–Fermi mixtures in one dimension
New Journal of Physics, 2016 We study one-dimensional (1D) strongly interacting Bose–Fermi mixtures by both the exact Bethe-ansatz method and variational perturbation theory within the degenerate ground state subspace of the system in the infinitely repulsive limit.
Haiping Hu, Liming Guan, Shu Chen
doaj +1 more source
Localization of weakly interacting Bose gas in quasiperiodic potential
New Journal of Physics, 2015 We study the localization properties of weakly interacting Bose gas in a quasiperiodic potential. The Hamiltonian of the non-interacting system reduces to the well known ‘Aubry–André model’, which shows the localization transition at a critical strength ...
Sayak Ray +3 more
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Bose–Einstein condensation of triplons with a weakly broken U(1) symmetry
New Journal of Physics, 2017 The low-temperature properties of certain quantum magnets can be described in terms of a Bose–Einstein condensation (BEC) of magnetic quasiparticles (triplons).
Asliddin Khudoyberdiev +2 more
doaj +1 more source
How Does a Dipolar Bose-Einstein Condensate Collapse? [PDF]
, 2008 We emphasize that the macroscopic collapse of a dipolar Bose-Einstein condensate in a pancake-shaped trap occurs through local density fluctuations, rather than through a global collapse to the trap center.
C. C. Bradley +9 more
core +2 more sources
Coherent quantum phase slip in two-component bosonic atomtronic circuits
New Journal of Physics, 2015 Coherent quantum phase slip consists in the coherent transfer of vortices in superfluids. We investigate this phenomenon in two miscible coherently coupled components of a spinor Bose gas confined in a toroidal trap.
A Gallemí +3 more
doaj +1 more source
Rydberg dressing: understanding of collective many-body effects and implications for experiments
New Journal of Physics, 2014 The strong interaction between Rydberg atoms can be used to control the strength and character of the interatomic interaction in ultracold gases by weakly dressing the atoms with a Rydberg state.
J B Balewski +5 more
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New Journal of Physics, 2016 We theoretically investigate the dynamic structure factor of a strongly interacting Fermi gas at the crossover from Bardeen–Cooper–Schrieffer superfluids to Bose–Einstein condensates, by developing an improved random phase approximation within the ...
Peng Zou +4 more
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