Analogues of Josephson junctions and black hole event horizons in atomic Bose–Einstein condensates

We study dynamical processes in coherently coupled atomic Bose–Einstein condensates. Josephson effects in ring-shaped and dumbbell geometries are theoretically investigated. Conditions for observation of the Josephson effect are revealed. We found that multicharged persistent current in toroidal c...

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Бібліографічні деталі
Дата:2018
Автори: Yakimenko, A.I., Matsyshyn, O.I., Oliinyk, A.O., Biloshytskyi, V.M., Chelpanova, O.G., Vilchynskii, S.I.
Формат: Стаття
Мова:English
Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2018
Назва видання:Физика низких температур
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Онлайн доступ:http://dspace.nbuv.gov.ua/handle/123456789/176265
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Назва журналу:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Цитувати:Analogues of Josephson junctions and black hole event horizons in atomic Bose–Einstein condensates / A.I. Yakimenko, O.I. Matsyshyn, A.O. Oliinyk, V.M. Biloshytskyi, O.G. Chelpanova, S.I. Vilchynskii // Физика низких температур. — 2018. — Т. 44, № 10. — С. 1316-1325. — Бібліогр.: 45 назв. — англ.

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Резюме:We study dynamical processes in coherently coupled atomic Bose–Einstein condensates. Josephson effects in ring-shaped and dumbbell geometries are theoretically investigated. Conditions for observation of the Josephson effect are revealed. We found that multicharged persistent current in toroidal condensate can be robust even for supersonic atomic flow. In numerical simulations the acoustic analogues of event horizon in quantized superflow were observed. These theoretical finding open perspectives for investigation of Bose Josephson junctions and quantum aspects of acoustic analogue of Hawking radiation in existing experimental setups.