Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Asaad R, Sakhel"'
Publikováno v:
Physical Review A. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f16ec89f111f135e00a832ade8ada648
https://doi.org/10.1103/physreva.107.023307
https://doi.org/10.1103/physreva.107.023307
Autor:
Asaad R Sakhel, Roger R Sakhel
Publikováno v:
Journal of Physics: Condensed Matter. 35:025402
The dynamic depletion of a trapped one-dimensional Bose–Einstein condensate (BEC) that is driven by laser stirring is numerically explored using beyond mean-field methods. For this purpose, the multi-configurational time-dependent Hartree method fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f46188edbac1ca9187902b4c43b0d268
https://doi.org/10.1088/1361-648x/ac9f98
https://doi.org/10.1088/1361-648x/ac9f98
Autor:
Roger R. Sakhel, Asaad R. Sakhel
Publikováno v:
Journal of physics. Condensed matter : an Institute of Physics journal. 32(31)
We report parametric resonances (PRs) in a numerical investigation of a driven one-dimensional, interacting, and disordered Bose-Einstein condensate (BEC) confined in different traps. The BEC is excited by an oscillating Gaussian obstacle along a bro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b064fa6f930ce0a0df812c81fe1e2c6c
https://pubmed.ncbi.nlm.nih.gov/32160602
https://pubmed.ncbi.nlm.nih.gov/32160602
Autor:
Asaad R. Sakhel, Roger R. Sakhel
Publikováno v:
Journal of Low Temperature Physics. 194:106-135
The effects of trapping anharmonicity on the expansion of a Bose–Einstein condensate (BEC) that is suddenly released from a one-dimensional power-law trap into a hard wall box potential are presented. It is chiefly found that trapping anharmonicity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbd4e46bcdb676ca96d7560de90f646d
https://doi.org/10.1007/s10909-018-2068-z
https://doi.org/10.1007/s10909-018-2068-z
Autor:
Asaad R. Sakhel, Roger R. Sakhel
Publikováno v:
Physica Scripta. 96:115401
We report parametric resonances (PRs) in the mean-field dynamics of a one-dimensional dipolar Bose-Einstein condensate (DBEC) in widely varying trapping geometries. The chief goal is to characterize the energy levels of this system by analytical meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a7aaf928dc8f545892285bf6ac77f89
https://doi.org/10.1088/1402-4896/ac0f3a
https://doi.org/10.1088/1402-4896/ac0f3a
Autor:
Roger R. Sakhel, Asaad R. Sakhel
Publikováno v:
Journal of Low Temperature Physics. 190:120-140
We examine the dynamics of a one-dimensional harmonically trapped Bose–Einstein condensate (BEC), induced by the addition of a dimple trap whose depth oscillates with time. For this purpose, the Lagrangian variational method (LVM) is applied to pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42b9506067119a7cd8db5bc6c7137907
https://doi.org/10.1007/s10909-017-1826-7
https://doi.org/10.1007/s10909-017-1826-7
Autor:
Asaad R. Sakhel
Publikováno v:
Physica B: Condensed Matter. 493:72-80
The dynamics of a Bose–Einstein condensate are examined numerically in the presence of a one-dimensional bichromatic optical lattice (BCOL) with external harmonic confinement in the strongly interacting regime. The condensate is excited by a focusi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6f9223e51e7a38039dff641348b4d14
https://doi.org/10.1016/j.physb.2016.04.024
https://doi.org/10.1016/j.physb.2016.04.024
Autor:
Roger R. Sakhel, Asaad R. Sakhel
Publikováno v:
Journal of Low Temperature Physics. 184:1092-1113
The elements of the vortex-dipole (VD) dynamics are numerically examined in a nonuniform Bose–Einstein condensate (BEC) using the time-dependent Gross–Pitaevskii equation that is solved by the split-step Crank–Nicolson method in real time. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddc8dceca5e44ba335ff6735d332435b
https://doi.org/10.1007/s10909-016-1636-3
https://doi.org/10.1007/s10909-016-1636-3
Publikováno v:
Physica B: Condensed Matter. 478:68-76
The dynamics of a Bose–Einstein condensate (BEC) is explored in the wake of a violent excitation caused by a strong time-dependent deformation of a trapping potential under the action of an intense stirring laser. The system is a two-dimensional BE
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::331ae1dd01e8cd3a1e8b8dda68c3099c
https://doi.org/10.1016/j.physb.2015.08.053
https://doi.org/10.1016/j.physb.2015.08.053
Publikováno v:
Physica B: Condensed Matter. 462:40-46
We propose to augment the harmonic oscillator wavefunction so that it can describe changes in the width of a trapped Bose gas under variations of temperature and interactions. This is achieved by the inclusion of a variational parameter which describ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59a26881abbf72d029c22d742c3ebc5f
https://doi.org/10.1016/j.physb.2015.01.009
https://doi.org/10.1016/j.physb.2015.01.009