Results 11 to 20 of about 142,410 (240)

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
doaj   +1 more source

Observation of fragmentation of a spinor Bose-Einstein condensate [PDF]

Science, 2020
Description Fragmenting the condensate In a Bose-Einstein condensate, a sizable fraction of particles occupies a single quantum state. In some systems, it is in principle possible to have more than one such macroscopically occupied state.
B. Evrard, A. Qu, J. Dalibard, F. Gerbier   +3 more
semanticscholar   +1 more source

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, L. Wacker, Kristoffer T. Skalmstang, M. Parish, J. Levinsen, Rasmus S. Christensen, G. Bruun, J. Arlt   +7 more
semanticscholar   +1 more source

Vortices in a Bose Einstein condensate [PDF]

Quantum Electronics and Laser Science Conference, 1999
Summary form only given. Since the first observations of Bose Einstein condensates (BEC) in dilute atomic gases, there has been considerable interest in observing effects in atomic BEC akin to the hallmark effects associated with a superfluid, in ...
M. Matthews, B. Anderson, P. Haljan, D. Hall, C. Wieman, E. Cornell   +5 more
semanticscholar   +1 more source

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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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, M. O. Borgh, L. S. Weiss, A. A. Blinova, J. Ruostekoski, D. S. Hall   +5 more
doaj   +1 more source

The Bose-Einstein Condensate and Cold Atom Laboratory [PDF]

EPJ Quantum Technology, 2019
Microgravity eases several constraints limiting experiments with ultracold and condensed atoms on ground. It enables extended times of flight without suspension and eliminates the gravitational sag for trapped atoms.
Kai Frye, S. Abend, Wolfgang Bartosch, A. Bawamia, Dennis Becker, H. Blume, C. Braxmaier, S. Chiow, M. Efremov, W. Ertmer, P. Fierlinger, T. Franz, N. Gaaloul, J. Grosse, C. Grzeschik, O. Hellmig, V. Henderson, W. Herr, U. Israelsson, J. Kohel, M. Krutzik, C. Kürbis, C. Lämmerzahl, Meike List, D. Lüdtke, N. Lundblad, J. Marburger, M. Meister, Moritz Mihm, H. Müller, H. Müntinga, A. M. Nepal, T. Oberschulte, A. Papakonstantinou, Jaka Perovšek, A. Peters, A. Prat, E. Rasel, A. Roura, Matteo Sbroscia, W. Schleich, C. Schubert, S. Seidel, Jan Sommer, Christian Spindeldreier, D. Stamper-Kurn, B. Stuhl, M. Warner, T. Wendrich, A. Wenzlawski, A. Wicht, P. Windpassinger, N. Yu, L. Wörner   +53 more
semanticscholar   +1 more source

A Method for the Dynamics of Vortices in a Bose-Einstein Condensate: Analytical Equations of the Trajectories of Phase Singularities

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, Albert Ferrando, J. Alberto Conejero, Pedro Fernández De Córdoba, Miguel Ángel García-March   +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, L. A. P. Ardila, T. Pohl, G. Bruun   +3 more
semanticscholar   +1 more source

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, Christoph Eigen, N. Navon, D. Clément, Robert P. Smith, Z. Hadzibabic   +5 more
semanticscholar   +1 more source