Results 11 to 20 of about 1,582 (138)
A rapidly expanding Bose-Einstein condensate: an expanding universe in the lab [PDF]
Physical Review X, 2017 We study the dynamics of a supersonically expanding ring-shaped Bose-Einstein condensate both experimentally and theoretically. The expansion redshifts long-wavelength excitations, as in an expanding universe.
S. Eckel +4 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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Observation of Attractive and Repulsive Polarons in a Bose-Einstein Condensate. [PDF]
Physical Review Letters, 2016 The problem of an impurity particle moving through a bosonic medium plays a fundamental role in physics. However, the canonical scenario of a mobile impurity immersed in a Bose-Einstein condensate (BEC) has not yet been realized.
N. B. Jørgensen +7 more
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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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Bipolarons in a Bose-Einstein Condensate. [PDF]
Physical Review Letters, 2018 Mobile impurities in a Bose-Einstein condensate form quasiparticles called polarons. Here, we show that two such polarons can bind to form a bound bipolaron state.
A. Camacho-Guardian +3 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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Quantum Depletion of a Homogeneous Bose-Einstein Condensate. [PDF]
Physical Review Letters, 2017 We measure the quantum depletion of an interacting homogeneous Bose-Einstein condensate and confirm the 70-year-old theory of Bogoliubov. The observed condensate depletion is reversibly tunable by changing the strength of the interparticle interactions ...
Raphael Lopes +5 more
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Parametric Excitation of a Bose-Einstein Condensate: From Faraday Waves to Granulation [PDF]
Physical Review X, 2017 A shaken Bose-Einstein condensate generates not only repeatable wave patterns known as Faraday waves, but also unexpected grains that may arise from shaking-induced quantum correlations.
J. Nguyen +8 more
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Composite structure of vortices in two-component Bose-Einstein condensate
Open Physics, 2015 In contrast to one-component Bose-Einstein condensate case, the vortices in two-component condensate can have various complicated structures. The vortices in a space-homogeneous Bose-Einstein condensate have been studied in this paper.
Ivashin Anatoly P., Poluektov Yuri M.
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Theory of BCS-like bogolon-mediated superconductivity in transition metal dichalcogenides
New Journal of Physics, 2021 We report on a novel mechanism of BCS-like superconductivity, mediated by a pair of Bogoliubov quasiparticles (bogolons). It takes place in hybrid systems consisting of a two-dimensional electron gas in a transition metal dichalcogenide monolayer in the ...
Meng Sun +4 more
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