Zobrazeno 1 - 10
of 3 433
pro vyhledávání: '"Yakimenko, A."'
Autor:
Borysenko, Yurii, Bazhan, Nataliia, Prykhodko, Olena, Pfeiffer, Dominik, Lind, Ludwig, Birkl, Gerhard, Yakimenko, Alexander
Precise control of topologically protected excitations, such as quantum vortices in atomtronic circuits, opens new possibilities for future quantum technologies. We theoretically investigate the dynamics of Josephson vortices (rotational fluxons) ind
Externí odkaz:
http://arxiv.org/abs/2411.09186
Autor:
Chaika, A., Oliinyk, A. O., Yatsuta, I. V., Proukakis, N. P., Edwards, M., Yakimenko, A. I., Bland, T.
Persistent currents--inviscid quantized flow around an atomic circuit--are a crucial building block of atomtronic devices. We investigate how acceleration influences the transfer of persistent currents between two density-connected, ring-shaped atomi
Externí odkaz:
http://arxiv.org/abs/2410.23818
Theoretical analysis of the interaction between superfluid dark matter and rotating supermassive black holes offers a promising framework for probing quantum effects in ultralight dark matter and its role in galactic structure. We study how black hol
Externí odkaz:
http://arxiv.org/abs/2409.20236
We study the dynamics of solitons under the action of one-dimensional quasiperiodic lattice potentials, fractional diffraction, and nonlinearity. The formation and stability of the solitons is investigated in the framework of the fractional nonlinear
Externí odkaz:
http://arxiv.org/abs/2409.18299
Publikováno v:
AVS Quantum Sci. 6, 030502 (2024)
The control over the geometry and topology of quantum systems is crucial for advancing novel quantum technologies. This work provides a synthesis of recent insights into the behaviour of quantum vortices within atomic Bose-Einstein condensates (BECs)
Externí odkaz:
http://arxiv.org/abs/2408.09270
Autor:
Gorkavenko, V. M., Barabash, O. V., Gorkavenko, T. V., Teslyk, O. M., Zaporozhchenko, A. O., Jia, Junji, Yakimenko, A. I., Gorbar, E. V.
Publikováno v:
Class. Quantum Grav. 41, 235013 (2024)
Dynamical friction and stellar orbital motion in spiral galaxies with dark matter composed of ultralight bosons in the state of rotating Bose-Einstein condensate (BEC) are studied. It is found that the dynamical friction force is significantly affect
Externí odkaz:
http://arxiv.org/abs/2408.00104
Publikováno v:
Physical Review B, 109, 214516 (2024)
We theoretically investigate the acoustic analogues of high-angular-momentum rotating black holes in exciton-polariton condensates. Performing numerical simulations of a long-lived ring-shaped condensate configuration with an acoustic horizon and erg
Externí odkaz:
http://arxiv.org/abs/2311.11117
Publikováno v:
New Journal of Physics, Volume 25, 103003 (2023)
We investigate the effects of ellipticity-induced curvature on atomic Bose-Einstein condensates confined in quasi-one-dimensional closed-loop waveguides. Our theoretical study reveals intriguing phenomena arising from the interplay between curvature
Externí odkaz:
http://arxiv.org/abs/2306.11873
Autor:
Gessner, Spencer, Adli, Erik, Allen, James M., An, Weiming, Clarke, Christine I., Clayton, Chris E., Corde, Sebastien, Doche, Antoine, Frederico, Joel, Green, Selina Z., Hogan, Mark J., Joshi, Chan, Lindstrom, Carl A., Litos, Michael, Marsh, Kenneth A., Mori, Warren B., O'Shea, Brendan, Vafaei-Najafabadi, Navid, Yakimenko, Vitaly
Plasmas are a compelling medium for particle acceleration owing to their natural ability to sustain electric fields that are orders of magnitude larger than those available in conventional radio-frequency accelerators. Plasmas are also unique amongst
Externí odkaz:
http://arxiv.org/abs/2304.01700
Publikováno v:
Phys. Rev. Research 5, 023109 (2023)
Ghost vortices constitute an elusive class of topological excitations in quantum fluids since the relevant phase singularities fall within regions where the superfluid density is almost zero. Here we present a platform that allows for the controlled
Externí odkaz:
http://arxiv.org/abs/2303.05403