Results 1 to 10 of about 142,410 (240)
A rapidly expanding Bose-Einstein condensate: an expanding universe in the lab. [PDF]
Phys Rev X, 2018 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.
Eckel S +4 more
europepmc +3 more sources
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
doaj +2 more sources
Can dark matter be a Bose-Einstein condensate? [PDF]
, 2007 We consider the possibility that the dark matter, which is required to explain the dynamics of the neutral hydrogen clouds at large distances from the galactic center, could be in the form of a Bose-Einstein condensate. To study the condensate we use the
Arbey A +28 more
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Geometrical Pumping with a Bose-Einstein Condensate. [PDF]
Phys Rev Lett, 2016 We realized a quantum geometric "charge" pump for a Bose-Einstein condensate (BEC) in the lowest Bloch band of a novel bipartite magnetic lattice. Topological charge pumps in filled bands yield quantized pumping set by the global-topological-properties ...
Lu HI +5 more
europepmc +3 more sources
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
doaj +2 more sources
Collapse and Revival of the Matter Wave Field of a Bose-Einstein Condensate
Nature, 2002 At the heart of a Bose-Einstein condensate lies its description as a single giant matter wave. Such a Bose-Einstein condensate represents the most "classical" form of a matter wave, just as an optical laser emits the most classical form of an ...
Bloch, Immanuel +3 more
core +2 more sources
Atomic Bose–Einstein condensate in twisted-bilayer optical lattices [PDF]
Nature, 2021 Quantum simulation of superfluid to Mott insulator transition in twisted-bilayer square lattices based on atomic Bose–Einstein condensates loaded into spin-dependent optical lattices provides a new direction for exploring moiré physics in ultracold atoms.
Zengming Meng +8 more
semanticscholar +1 more source
Vortex formation in a stirred bose-einstein condensate [PDF]
Physical Review Letters, 1999 Using a focused laser beam we stir a Bose-Einstein condensate of 87Rb confined in a magnetic trap and observe the formation of a vortex for a stirring frequency exceeding a critical value.
Madison, Chevy, Wohlleben, Dalibard
semanticscholar +1 more source
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
doaj +1 more source
Anderson localization of a non-interacting Bose–Einstein condensate [PDF]
Nature, 2008 Anderson localization of waves in disordered media was originally predicted fifty years ago, in the context of transport of electrons in crystals. The phenomenon is much more general and has been observed in a variety of systems, including light waves ...
G. Roati +8 more
semanticscholar +1 more source