Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Y. M. Bidasyuk"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-14 (2023)
Abstract The nature of dark matter (DM) remains one of the unsolved mysteries of modern physics. An intriguing possibility is to assume that DM consists of ultralight bosonic particles in the Bose–Einstein condensate (BEC) state. We study stationar
Externí odkaz:
https://doaj.org/article/b32347e379284261b703e94be474e4b2
Publikováno v:
Physical Review A. 107
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1700881270d40629498cb4a04242b4d3
https://doi.org/10.1103/physreva.107.023106
https://doi.org/10.1103/physreva.107.023106
Publikováno v:
Physical Review A. 105
We report on a theoretical study of a ring-shaped Bose-Einstein condensate with Raman-induced spin-orbital-angular-momentum coupling. We analyze the structure of the ground-state of the system depending different physical parameters and reveal a pecu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::64b12352216d3ec8a36467ead4e355a0
https://doi.org/10.1103/physreva.105.023320
https://doi.org/10.1103/physreva.105.023320
Publikováno v:
Physical Review A. 102
Theoretical study is presented for a spinor Bose-Einstein condensate, whose two components are coupled by copropagating Raman beams with different orbital angular momenta. The investigation is focused on the behavior of the ground state of this conde
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0cd7d5ce28f118b03799c8d17da2f6a2
https://doi.org/10.1103/physreva.102.063328
https://doi.org/10.1103/physreva.102.063328
We present a detailed study of the spectrum and dispersion of Bogoliubov quasiparticles in two coupled elongated Bose-Einstein condensates. We develop an analytically solvable model that approximates two infinite homogeneous condensates and compare i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4641d9fc9533ad6e4c4941d12da4df6
Publikováno v:
Physical Review A. 100
We investigate the low-energy dynamics of two coupled anisotropic Bose-Einstein condensates forming a long Josephson junction. The theoretical study is performed in the framework of the two-dimensional Gross-Pitaevskii equation and the Bogoliubov--de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af5221d12c6d9403d418ba45d9749dfc
https://doi.org/10.1103/physreva.100.033601
https://doi.org/10.1103/physreva.100.033601
Autor:
Y. M. Bidasyuk, O. O. Prikhodko
Publikováno v:
Ukrainian Journal of Physics. 66:198
We propose an alternative implementation of the projected Gross–Pitaevskki equation adapted for a numerical modeling of the atomic Bose–Einstein condensate trapped in a toroidally shaped potential. We present an accurate efficient scheme to evalu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57c2e7a3aef54957bbe607f539d8e1c0
https://doi.org/10.15407/ujpe66.3.198
https://doi.org/10.15407/ujpe66.3.198
In the framework of the stochastic projected Gross-Pitaevskii equation we investigate finite-temperature dynamics of a bosonic Josephson junction (BJJ) formed by a Bose-Einstein condensate of atoms in a two-well trapping potential. We extract the cha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7ff18375923b68f2ac9c99422ffdeed
Publikováno v:
Ukrainian Journal of Physics. 59:439-451
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00b7d00415cebecfebcec5840c0ee252
https://doi.org/10.15407/ujpe59.04.0439
https://doi.org/10.15407/ujpe59.04.0439
We study the resonant excitation of sound modes from Josephson oscillations in Bose-Einstein condensates. From the simulations for various setups using the Gross-Pitaevskii mean-field equations and Josephson equations we observe additional tunneling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e3f0bd785b040303be7c27b90b2ee28