Bogoliubov Quasiparticles Carried by Dark Solitonic Excitations in Nonuniform Bose-Einstein Condensates

Chin. Phys. Lett.

1998, Vol. 15

Issue (8): 550-552 DOI:

Original Articles

Bogoliubov Quasiparticles Carried by Dark Solitonic Excitations in Nonuniform Bose-Einstein Condensates

HONG Tao;WANG Yu-zhu;HUO Yun-sheng

Joint Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

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HONG Tao, WANG Yu-zhu, HUO Yun-sheng 1998 Chin. Phys. Lett. 15 550-552

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Abstract We consider the noncondensate part of the Bose gas in presence of dark solitons. We get a stationary equation of Bogoliubov quasiparticles and find that these Bogoliubov quasiparticles are confined by a dark soliton and carried to propagate with it. This model of the compound structure of the soliton and Bogoliubov quasiparticles provides more precise description of localized sound excitations in Bose-Einstein condensates.

Keywords: 03.75.Fi 42.65.Tg 42.81.Dp

Published: 01 August 1998

PACS:	03.75.Fi
	42.65.Tg	(Optical solitons; nonlinear guided waves)
	42.81.Dp	(Propagation, scattering, and losses; solitons)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y1998/V15/I8/0550

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