Results 81 to 90 of about 33,314 (234)

The Casimir-like effect in a one-dimensional Bose gas

New Journal of Physics, 2019
The electromagnetic Casimir effect manifests as the interaction between uncharged conducting objects that are placed in a vacuum. More generally, the Casimir-like effect denotes an induced interaction between external bodies in a fluctuating medium.
Benjamin Reichert, Zoran Ristivojevic, Aleksandra Petković   +2 more
doaj   +1 more source

Bose-Einstein Condensates in the Large Gas Parameter Regime [PDF]

, 2001
Bose-Einstein condensates of 10$^4$ $^{85}$Rb atoms in a cylindrical trap are studied using a recently proposed modified Gross-Pitaevskii equation. The existence of a Feshbach resonance allows for widely tuning the scattering length of the atoms, and ...
A. Fabrocini, A. Fabrocini, A. L. Fetter, A. Polls, A. Polls, B. Goss, E. Braaten, E. P. Gross, E. Tiesinga, E. Tiesinga, F. Dalfovo, J. L. Roberts, L. P. Pitaevskii, M. Edwards, S. Fantoni, S. Giorgini, S. Inouye, S. L. Cornish, V. Vuletic, W. C. Stwalley   +19 more
core   +3 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

Vortex helices for the Gross–Pitaevskii equation

Journal de Mathématiques Pures et Appliquées, 2005
We prove the existence of travelling vortex helices to the Gross-Pitaevskii equation in R^3. These solutions have an infi nite energy, are periodic in the direction of the axis of the helix and have a degree one at infinity in the orthogonal direction.
openaire   +2 more sources

Spin-wave growth via Shapiro resonances in a spinor Bose-Einstein condensate

Physical Review Research, 2021
We theoretically study the resonant phenomenon in a spin-1 Bose-Einstein condensate periodically driven by a quadratic Zeeman coupling. This phenomenon is closely related to the Shapiro steps in superconducting Josephson junctions, and the previous ...
Yuya Imaeda, Kazuya Fujimoto, Yuki Kawaguchi   +2 more
doaj   +1 more source

Pade approximations of solitary wave solutions of the Gross-Pitaevskii equation

, 2003
Pade approximants are used to find approximate vortex solutions of any winding number in the context of Gross-Pitaevskii equation for a uniform condensate and condensates with axisymmetric trapping potentials.
Berloff N G, Berloff N G, Caradoc-Davies B M, Donnelly R J, Fetter A L, Ginzburg V L, Gross E P, Jones C A, Jones C A, Konotop V V, Natalia G Berloff, Nazarenko S, Pitaevskii L P, Roberts P H   +13 more
core   +1 more source

Fortran and C programs for the time-dependent dipolar Gross-Pitaevskii equation in an anisotropic trap [PDF]

Computer Physics Communications, 2015
Many of the static and dynamic properties of an atomic Bose–Einstein condensate (BEC) are usually studied by solving the mean-field Gross–Pitaevskii (GP) equation, which is a nonlinear partial differential equation for short-range atomic interaction ...
Kishor Kumar Ramavarmaraja, L. E. Young-S., D. Vudragović, A. Balaž, Paulsamy Muruganandam, S. Adhikari   +5 more
semanticscholar   +1 more source

Discrete Chiral Ballistic Polariton Laser

Laser &Photonics Reviews, Volume 19, Issue 15, August 7, 2025.
Planar microcavities in the strong light–matter coupling regime exhibit exciton‐polariton modes with a strong chiral response toward circularly polarized light. This feature is exploited alongside inherent spin‐orbit coupling of cavity light to generate giant discrete optical vortices in polygonal arrays of exciton‐polariton condensates.
Zuzanna Werner, Andrzej Frączak, Valtýr Kári Daníelsson, Jacek Szczytko, Barbara Piętka, Helgi Sigurðsson   +5 more
wiley   +1 more source

Self-Similarity Analysis of the Nonlinear Schrödinger Equation in the Madelung Form

Advances in Mathematical Physics, 2018
In the present study a particular case of Gross-Pitaevskii or nonlinear Schrödinger equation is rewritten to a form similar to a hydrodynamic Euler equation using the Madelung transformation.
Imre F. Barna, Mihály A. Pocsai, L. Mátyás   +2 more
doaj   +1 more source

Critical Energies and Wigner Functions of the Stationary States of the Bose Einstein Condensates in a Double‐Well Trap

Advanced Quantum Technologies, Volume 8, Issue 7, July 2025.
The critical parameters and energies, at which the wave function of the Bose Einstein Condensate in a double well trap exhibit the symmetry breaking, are estimated. The phase space representation of the states is obtained trough the Wigner function and the trends of the negativities are analyzed.
D. J. Nader, E. Serrano‐Ensástiga
wiley   +1 more source