Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Prikhodko, O. O."'
We study chirality production in the pseudoscalar inflation model of magnetogenesis taking into account the Schwinger effect and particle collisions in plasma in the relaxation time approximation. We consider the Schwinger production of one Dirac fer
Externí odkaz:
http://arxiv.org/abs/2311.07429
Publikováno v:
Phys. Rev. A 105, 023320 (2022)
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:
http://arxiv.org/abs/2201.08728
Publikováno v:
Phys. Rev. A 102, 043316 (2020)
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:
http://arxiv.org/abs/2006.06621
Autor:
Prikhodko, O. O., Bidasyuk, Y. M.
Publikováno v:
Ukr. J. Phys. 2021. Vol. 66, No. 3, pp. 198-205
We propose an alternative implementation of the Projected Gross-Pitaevskki equation adapted for numerical modeling of the atomic Bose-Einstein condensate trapped in a toroidally-shaped potential. We present an accurate and efficient scheme to evaluat
Externí odkaz:
http://arxiv.org/abs/2003.06921
Publikováno v:
J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 205301
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:
http://arxiv.org/abs/1804.06109
Akademický článek
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Publikováno v:
Phys. Rev. A 94, 033603 (2016)
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:
http://arxiv.org/abs/1607.06590
Autor:
Bidasyuk, Y. M., Chumachenko, A. V., Prikhodko, O. O., Vilchinskii, S. I., Weyrauch, M., Yakimenko, A. I.
Publikováno v:
Phys. Rev. A 92, 053603 (2015)
We reveal that Hopf solitons can be stabilized in rotating atomic Bose-Einstein condensate. The Hopfion is a matter-wave vortex complex which carries two independent winding numbers. Such a topological solitonic structure results from a superfluid fl
Externí odkaz:
http://arxiv.org/abs/1508.01697
We study two-dimensional soliton-soliton vector pairs in media with self-focusing nonlinearities and defocing cross-interactions. The general properties of the stationary states and their stability are investigated. The different scenarios of instabi
Externí odkaz:
http://arxiv.org/abs/1003.2776
We study the bound states of two-dimensional bright solitons in nonlocal nonlinear media. The general properties and stability of these multisolitary structures are investigated analytically and numerically. We have found that a steady bound state of
Externí odkaz:
http://arxiv.org/abs/nlin/0607062