Results 1 to 10 of about 1,750 (120)
Second sound in the crossover from the Bose-Einstein condensate to the Bardeen-Cooper-Schrieffer superfluid [PDF]
Nature Communications, 2021 The second sound is an entropy oscillation propagating with constant pressure. Here the authors demonstrate the variation of the second sound wave in the crossover from the Bose-Einstein condensate to the Bardeen-Cooper-Schrieffer superfluid using 6Li.
Daniel K. Hoffmann +6 more
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Direct evidence of spatial stability of Bose-Einstein condensate of magnons [PDF]
Nature Communications, 2020 Little is known about the underlying mechanism responsible for the spatial stability of magnon Bose-Einstein condensates. Here experimental evidence is provided for a repulsive interaction of magnons in the condensate resulting in its stabilization.
I. V. Borisenko +6 more
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Analogue Gravitational Lensing in Bose-Einstein Condensates
Universe, 2023 We consider the propagation of phonons in the presence of a particle sink with radial flow in a Bose–Einstein condensate. Because the particle sink can be used to simulate a static acoustic black hole, the phonon would experience a considerable spacetime
Decheng Ma +3 more
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Kinetics of Strongly Nonequilibrium Magnon Gas Leading to Bose-Einstein Condensation [PDF]
Журнал нано- та електронної фізики, 2017 Kinetic equations describing nonequilibrium magnon gas under the action of parametric pumping are considered with an account of kinetic instability processes. These processes strongly influence condition of magnon Bose-Einstein condensate formation.
D.V. Slobodianiuk, O.V. Prokopenko
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Controlled creation and decay of singly-quantized vortices in a polar magnetic phase
Communications Physics, 2021 Superfluid vortices are important in many diverse systems, including spinor Bose-Einstein condensates. Here, the experimental and theoretical analysis of the creation and time evolution of vortices in the polar phase of a spin-1 Bose-Einstein condensate ...
Y. Xiao +5 more
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The Influence of s-Wave Interactions on Focussing of Atoms
Atoms, 2021 The focusing of a rubidium Bose–Einstein condensate via an optical lattice potential is numerically investigated. The results are compared with a classical trajectory model which underestimates the width of the focused beam.
Roham Richberg, Andrew M. Martin
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Condensed Matter, 2023 We present a method to study the dynamics of a quasi-two dimensional Bose-Einstein condensate which initially contains several vortices at arbitrary locations.
Sergi De María-García +4 more
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Bogolon-mediated light absorption in atomic condensates of different dimensionality
Scientific Reports, 2023 In the case of structureless bosons, cooled down to low temperatures, the absorption of electromagnetic waves by their Bose-Einstein condensate is usually forbidden due to the momentum and energy conservation laws: the phase velocity of the collective ...
Dogyun Ko +3 more
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Journal of Bangladesh Academy of Sciences, 1970 The work represents and investigates the stationary solutions of the one-dimensional Non-linear Schrödinger Equation (NLSE), for attractive non-linearity, in the Bose-Einstein condensates (BEC) under the box boundary condition and calculates the characteristics of internal modes of bright solitons (eigen modes of small perturbation of the condensate ...
MH Rashid +4 more
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New Journal of Physics, 2012 We theoretically study the loading of a two-species Bose-Einstein condensate to an optical lattice in a tightly-confined one-dimensional trap. Due to quantum fluctuations the relative inter and intra species phase coherence between the atoms and the on-site atom number fluctuations are reduced in the miscible regime.
Shrestha, Uttam, Ruostekoski, Janne
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