Results 11 to 20 of about 1,769 (45)
Excitation band topology and edge matter waves in Bose–Einstein condensates in optical lattices
New Journal of Physics, 2015 We show that Bose–Einstein condensates in optical lattices with broken time-reversal symmetry can support chiral edge modes originating from nontrivial bulk excitation band topology.
Shunsuke Furukawa, Masahito Ueda
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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
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Time-dependent restricted-active-space self-consistent-field theory for bosonic many-body systems
New Journal of Physics, 2017 We develop an ab initio time-dependent wavefunction based theory for the description of a many-body system of cold interacting bosons. Like the multi-configurational time-dependent Hartree method for bosons (MCTDHB), the theory is based on a ...
Camille Lévêque, Lars Bojer Madsen
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, 2011 We reveal the connection of the recent numerical observations of Krstulovic and Brachet [arXiv:1007.4441] with the general theory of relaxation kinetics of the strongly non-equilibrium Bose-Einstein condensates.Comment: comment on arXiv:1007.4441 ...
B. V. Svistunov, Evgeny Kozik
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Bose-Einstein condensates on tilted lattices: coherent, chaotic and subdiffusive dynamics [PDF]
, 2009 The dynamics of a (quasi)one-dimensional interacting atomic Bose-Einstein condensate in a tilted optical lattice is studied in a discrete mean-field approximation, i.e., in terms of the discrete nonlinear Schr\"odinger equation.
Andrey R. Kolovsky +7 more
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Growth of Hydrodynamic Perturbations in Accretion Disks: Possible Route to Non-Magnetic Turbulence
, 2005 We study the possible origin of hydrodynamic turbulence in cold accretion disks such as those in star-forming systems and quiescent cataclysmic variables.
Afshordi +14 more
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Bose-Einstein Condensation on a Permanent-Magnet Atom Chip [PDF]
, 2005 We have produced a Bose-Einstein condensate on a permanent-magnet atom chip based on periodically magnetized videotape. We observe the expansion and dynamics of the condensate in one of the microscopic waveguides close to the surface.
B E Sauer +14 more
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, 2012 I discuss the Comment by L'vov and Nazarenko (arXiv:1208.4593) aiming at refutation of my perviously published criticism of their mechanism of the Kelvin-wave cascade.
Sonin, E. B.
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Mean-field dynamics of a non-Hermitian Bose-Hubbard dimer [PDF]
, 2008 We investigate an $N$-particle Bose-Hubbard dimer with an additional effective decay term in one of the sites. A mean-field approximation for this non-Hermitian many-particle system is derived, based on a coherent state approximation.
A. E. Niederle +3 more
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Dynamics of Nonground-State Bose-Einstein Condensates
, 2005 Dilute Bose gases, cooled down to low temperatures below the Bose-Einstein condensation temperature, form coherent ensembles described by the Gross-Pitaevskii equation. Stationary solutions to the latter are topological coherent modes.
A.S. Parkins +11 more
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