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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of an oscillating Gaussian obstacle in a dipolar Bose-Einstein condensate

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Author(s):
Sabari, Subramaniyan [1, 2] ; Kumar, R. Kishor [3]
Total Authors: 2
Affiliation:
[1] Bharathidasan Univ, Dept Phys, Palkalaiperur Campus, Tiruchchirappalli 620024, Tamil Nadu - India
[2] Savitribai Phule Pune Univ, Dept Phys, Pune 411007, Maharashtra - India
[3] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil
Total Affiliations: 3
Document type: Journal article
Source: EUROPEAN PHYSICAL JOURNAL D; v. 72, n. 3 MAR 20 2018.
Web of Science Citations: 2
Abstract

We study the dynamics of vortex dipoles in erbium (Er-168) and dysprosium ((164) Dy) dipolar Bose-Einstein condensates (BECs) by applying an oscillating blue-detuned laser (Gaussian obstacle). For observing vortex dipoles, we solve a nonlocal Gross-Pitaevskii (GP) equation in quasi two-dimensions in real-time. We calculate the critical velocity for the nucleation of vortex dipoles in dipolar BECs with respect to dipolar interaction strengths. We also show the dynamics of the group of vortex dipoles and rarefaction pulses in dipolar BECs. In the dipolar BECs with Gaussian obstacle, we observe rarefaction pulses due to interaction of dynamically migrating vortex dipoles. (AU)

FAPESP's process: 14/01668-8 - Excitations of dipolar Bose-Einstein condensates
Grantee:Kishor Kumar Ramavarmaraja
Support Opportunities: Scholarships in Brazil - Post-Doctoral