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

Texto completo
Autor(es):	Sabari, Subramaniyan ^{[1, 2]} ; Kumar, R. Kishor ^[3] Número total de Autores: 2
Afiliação do(s) autor(es):	^[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 Número total de Afiliações: 3
Tipo de documento:	Artigo Científico
Fonte:	EUROPEAN PHYSICAL JOURNAL D; v. 72, n. 3 MAR 20 2018.
Citações Web of Science:	2
Resumo
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)

Processo FAPESP:	14/01668-8 - Excitações de condensados de Bose-Einstein com interação dipolar
Beneficiário:	Kishor Kumar Ramavarmaraja
Modalidade de apoio:	Bolsas no Brasil - Pós-Doutorado