Results 71 to 80 of about 144,548 (197)

Generation of linear waves in the flow of Bose-Einstein condensate past an obstacle

, 2007
The theory of linear wave structures generated in Bose-Einstein condensate flow past an obstacle is developed. The shape of wave crests and dependence of amplitude on coordinates far enough from the obstacle are calculated.
A. M. Kamchatnov, G. A. El, G. B. Whitham, J. Denschlag, L. Kelvin, L. P. Pitaevskii, M. R. Andrews, N. N. Bogolyubov, R. S. Johnson, S. Burger, T. Winiecki, Yu. G. Gladush   +11 more
core   +1 more source

Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link. [PDF]

Physical Review Letters, 2010
We have created a long-lived (≈40 s) persistent current in a toroidal Bose-Einstein condensate held in an all-optical trap. A repulsive optical barrier across one side of the torus creates a tunable weak link in the condensate circuit, which can affect ...
A. Ramanathan, K. Wright, S. R. Muniz, M. Zelan, W. T. Hill, C. Lobb, K. Helmerson, W. Phillips, G. Campbell   +8 more
semanticscholar   +1 more source

Strongly Coupled Exciton–Hyperbolic‐Phonon‐Polariton Hybridized States in hBN‐Encapsulated Biased Bilayer Graphene

Advanced Optical Materials, Volume 13, Issue 35, December 12, 2025.
Excitons in biased bilayer graphene are electrically tunable excitations in the mid‐infrared (MIR) spectrum, where optical transitions are typically scarce. In this work, it is demonstrated that when the bilayer is encapsulated in hexagonal‐boron‐nitride (hBN)—a material supporting optical phonons and hyperbolic‐phonon‐polaritons (HPhPs) in the MIR—the
Tomer Eini, N. M. R. Peres, Yarden Mazor, Itai Epstein   +3 more
wiley   +1 more source

Non-exponential one-body loss in a Bose-Einstein condensate

, 2012
We have studied the decay of a Bose-Einstein condensate of metastable helium atoms in an optical dipole trap. In the regime where two- and three-body losses can be neglected we show that the Bose-Einstein condensate and the thermal cloud show ...
J. S. Borbely, R. van Rooij, S. Knoop, W. Vassen, Y. Kagan   +4 more
core   +2 more sources

Supercurrents and Tunneling in Massive Many‐Vortex Necklaces and Star‐Lattices

Annalen der Physik, Volume 537, Issue 12, December 2025.
It is numerically shown how massive many‐vortex systems, in a mixture of Bose–Einstein condensates, can host the bosonic tunneling of the infilling component in an almost‐periodic way when the vortices are organized in necklaces or star‐lattices. The purpose is to explore the conditions for the onset of Josephson supercurrents in rotating many‐vortex ...
Alice Bellettini, Vittorio Penna
wiley   +1 more source

Bose-Einstein condensation of excitons in Cu$_2$O

, 2002
We present a parameter-free model which estimates the density of excitons in Cu$_2$O, related to experiments that have tried to create an excitonic Bose-Einstein condensate.
D.P. Trauernicht, D.W. Snoke, D.W. Snoke, D.W. Snoke, D.W. Snoke, D.W. Snoke, F. Dalfovo, F.I. Kreingol’d, G. M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, G.M. Kavoulakis, J.C. Kim, J.L. Lin, J.M. Kosterlitz, J.S. Weiner, K. Johnsen, K.E. O’Hara, L.V. Butov   +19 more
core   +1 more source

Characterization of Bubbles and Antibubbles Interfaces Stabilized Using Pickering Particles With Different Wetting Properties

European Journal of Lipid Science and Technology, Volume 127, Issue 12, December 2025.
GRAPHICAL ABSTRACT Preparation of W/O/W double emulsions using hydrophobic silica (R972) and maltodextrin. A primary W/O emulsion is formed via homogenization and ultrasound and then re‐emulsified in an outer aqueous phase. The final emulsion is freeze‐dried for 1 day to obtain structured antibubbles.
Charalampos Tsekeridis, Agathe Belime, Albert T. Poortinga, Heloisa N. Bordallo   +3 more
wiley   +1 more source

Condensate formation with three-component ultracold fermions

, 2011
We investigate the formation of Bose-Einstein condensation and population imbalance in a three-component Fermi superfluid by increasing the U(3) invariant attractive interaction.
L. D. Landau, Luca Salasnich
core   +1 more source

Dynamics of Vector Soliton Singlets and Pairs in Self‐Mode‐Locked Tm‐Doped Fibre Lasers

Laser &Photonics Reviews, Volume 19, Issue 23, December 3, 2025.
This study characterises soliton build‐up dynamics in a self‐mode‐locked Tm‐doped fibre laser, where both cavity birefringence and distributed saturable absorber play significant roles in the intracavity pulse shaping. The recorded single‐shot spectra using the dispersive Fourier transform technique reveal intensity‐dependent temporal splitting of ...
Dennis C. Kirsch, Anastasia Bednyakova, Maria Chernysheva   +2 more
wiley   +1 more source

Number-conserving master equation theory for a dilute Bose-Einstein condensate

, 2010
We describe the transition of $N$ weakly interacting atoms into a Bose-Einstein condensate within a number-conserving quantum master equation theory. Based on the separation of time scales for condensate formation and non-condensate thermalization, we ...
A. Schelle, Alexej Schelle, Andreas Buchleitner, C. Cohen-Tannoudji, C. W. Gardiner, Dominique Delande, F. Reif, R. Kaiser, S. Stringari, Thomas Wellens, Vi. V. Kocharovsky   +10 more
core   +1 more source