Results 61 to 70 of about 142,410 (240)

Bose-Einstein Condensate in Synchronous Coordinates

Physical Sciences Forum, 2023
Analytical spherically symmetric static solution to the set of Einstein and Klein-Gordon equations in a synchronous reference frame is considered. In a synchronous reference frame, a static solution exists in the ultrarelativistic limit p=−ε/3.
Boris E. Meierovich
doaj   +1 more source

Thermodynamics of Solitonic Matter Waves in a Toroidal Trap [PDF]

, 2006
We investigate the thermodynamic properties of a Bose-Einstein condensate with negative scattering length confined in a toroidal trapping potential. By numerically solving the coupled Gross-Pitaevskii and Bogoliubov-de Gennes equations, we study the ...
A. L. Fetter, A. Parola, L. Reatto, L. Salasnich, M. Mitchell   +4 more
core   +2 more sources

Crossover from a molecular Bose-Einstein condensate to a degenerate Fermi gas. [PDF]

Physical Review Letters, 2004
We demonstrate a reversible conversion of a 6Li2 molecular Bose-Einstein condensate to a degenerate Fermi gas of atoms by adiabatically crossing a Feshbach resonance.
M. Bartenstein, A. Altmeyer, S. Riedl, S. Jochim, C. Chin, J. Denschlag, R. Grimm   +6 more
semanticscholar   +1 more source

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

Annalen der Physik, EarlyView.
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

Gravitational caustics in an atom laser

Nature Communications, 2021
Previously, the study of caustics has mostly focused on experiments with light. Here, the authors demonstrate gravitational caustics and investigate catastrophe atom optics using the matter waves of an atom laser generated from a Bose-Einstein condensate.
M. E. Mossman, T. M. Bersano, Michael McNeil Forbes, P. Engels   +3 more
doaj   +1 more source

Periodic Quantum Tunneling and Parametric Resonance with Cigar-Shaped Bose-Einstein Condensates

, 2002
We study the tunneling properties of a cigar-shaped Bose-Einstein condensate by using an effective 1D nonpolynomial nonlinear Schr\"odinger equation (NPSE).
A Parola, Arnold V I, Fribel S, Gross E P, L Reatto, L Salasnich, Landau L D, Pitaevskii L P, Pitaevskii L P, Salasnich L, Salasnich L, Zapata I   +11 more
core   +1 more source

All-optical formation of an atomic Bose-Einstein condensate. [PDF]

Physical Review Letters, 2001
We have created a Bose-Einstein condensate (BEC) of 87Rb atoms directly in an optical trap. We employ a quasielectrostatic dipole force trap formed by two crossed CO2 laser beams. Loading directly from a sub-Doppler laser-cooled cloud of atoms results in
M. Barrett, J. Sauer, M. Chapman
semanticscholar   +1 more source

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

European Journal of Lipid Science and Technology, EarlyView.
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

Macroscopic quantum tunnelling of a Bose-Einstein condensate in a Cubic-Plus-Quadratic Well

AAPPS Bulletin
We study the macroscopic quantum tunnelling of an interacting Bose-Einstein condensate in a cubic-plus-quadratic well that was approximately realized in recent experiment.
Rui-Bin Liu, Mingyang Liu, Shizhong Zhang   +2 more
doaj   +1 more source

Semiclassical solutions localized in a neighborhood of a circle for the Gross-Pitaevskii equation [PDF]

Компьютерные исследования и моделирование, 2009
Non-collapsing soliton-like wave functions are shown to exist in semiclassical approximation for the Bose-Einstein condensate model based on the Gross-Pitaevskii equation with attractive nonlinearity and external field of magnetic trap of special form.
Aleksei Vladimirovich Borisov, Andrey Yur'evich Trifonov, Aleksandr Vasilievich Shapovalov   +2 more
doaj   +1 more source