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Nonequilibrium dynamics of optical-lattice-loaded Bose-Einstein-condensate atoms: Beyond the Hartree-Fock-Bogoliubov approximation
(American Physical Society, 2004-12)
The nonequilibrium dynamics of a Bose-Einstein condensate selectively loaded into every third site of a one-dimensional optical lattice was discussed. A two-particle irreducible (2PI) closed-time-path (CTP) effective action ...
Route to turbulence in a trapped Bose-Einstein condensate
(WILEY-BLACKWELL, 2011)
We have studied a Bose-Einstein condensate of (87)Rb atoms under an oscillatory excitation. For a fixed frequency of excitation, we have explored how the values of amplitude and time of excitation must be combined in order ...
Non-Equilibrium Bose-Einstein-Like Condensation
(Wiley-Blackwell, 2018-10-01)
The original Bose-Einstein condensation (BEC) was theoretically established in the 1920s, for the case of an ideal gas of boson particles (a consequence of the symmetry of the wave function). In the 1990s, it was realized ...
Statistical thermodynamics of the Fröhlich-Bose-Einstein condensation of magnons out of equilibrium
(2019-09-18)
This work presents a nonequilibrium statistical-thermodynamic approach to the study of a Fröhlich-Bose-Einstein condensation of magnons under radio-frequency radiation pumping. Fröhlich-Bose-Einstein condensates display a ...
Transition to quantum turbulence in finite-size superfluids
(WILEY-BLACKWELL, 2011)
A novel concept of quantum turbulence in finite size superfluids, such as trapped bosonic atoms, is discussed. We have used an atomic (87)Rb Bose-Einstein condensate (BEC) to study the emergence of this phenomenon. In our ...
Quantum kinetic theory of a Bose-Einstein gas confined in a lattice
(American Physical Society, 2005-12)
We extend our earlier work on the nonequilibrium dynamics of a Bose-Einstein condensate initially loaded into a one-dimensional optical lattice. From the two-particle-irreducible (2PI) closed-time-path (CTP) effective ...
Nonequilibrium Bose-Einstein condensation of hot magnons
(Amer Physical SocCollege PkEUA, 2010)
Nonlinear relaxation in nonequilibrium oscillators: Bose-Einstein-like condensation in a dissipative structure
(Pergamon-elsevier Science LtdOxfordInglaterra, 2000)
Formation of granular structures in trapped Bose-Einstein condensates under oscillatory excitations
(Institute of Physics - IOPBristol, 2014-07)
We present experimental observations and numerical simulations of nonequilibrium spatial structures in a trapped Bose-Einstein condensate subject to oscillatory perturbations. In experiment, first, there appear collective ...