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

Autor:	Yakimenko, A. I., Matsyshyn, O. I., Oliinyk, A. O., Biloshytskyi, V. M., Chelpanova, O. G., Vilchynskii, S. I.
Rok vydání:	2018
Předmět:	Condensed Matter - Quantum Gases
Druh dokumentu:	Working Paper
DOI:	10.1063/1.5055844
Popis:	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 was 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. Comment: 11 pages, 10 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1805.00696 Zobrazit plný text záznamu View this record from Arxiv