10Jan 2018

VORTEX DIPOLE EXCITATIONS IN TRAPPED BOSE-EINSTEIN CONDENSATE.

  • Department of information engineering, nanjing normal university taizhou college, taizhou 225300, china.
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We numerically study dynamical creation of vortex excitations in Bose-Einstein condensates (BECs) within the framework of mean-field theory using dissipative Gross-pitaevskii equation. Vortex dipoles and soliton pairs are found to be created after two Gaussian obstacle potentials collide head on. Furthermore, we examine the mechanism of vortex excitation in a highly oblate spin-orbit coupling BEC. It is found that the symmetry of vortex dipoles is destroyed and the structure is quite different from that without spin-orbit coupling. The critical velocity for vortex-antivortex pair nucleation is heavily influenced by the strength of spin-orbit coupling.

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[Qingli Zhu. (2018); VORTEX DIPOLE EXCITATIONS IN TRAPPED BOSE-EINSTEIN CONDENSATE. Int. J. of Adv. Res. 6 (Jan). 654-661] (ISSN 2320-5407). www.journalijar.com

Qingli Zhu
Department of information engineering, Nanjing Normal University Taizhou college, Taizhou 225300, China

DOI:

Article DOI: 10.21474/IJAR01/6270      
DOI URL: https://dx.doi.org/10.21474/IJAR01/6270

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