Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 12: Quantum Gases: Bosons II

Q 12.5: Vortrag

Montag, 23. März 2015, 15:30–15:45, P/H2

Faraday Waves in Dipolar Bose-Einstein Condensates — Dušan Vudragović and •Antun Balaž — Scientific Computing Laboratory, Institute of Physics Belgrade, University of Belgrade, Pregrevica 118, 11080 Belgrade, Serbia

We study the emergence of Faraday waves in quasi-one-dimensional dipolar Bose-Einstein condensates of ⁵²Cr and ¹⁶⁴Dy subject to periodic modulation of the radial confinement. We investigate through extensive numerical simulations and detailed variational treatment the effects of the strong dipolar interaction on the spatial period of the Faraday waves. Unlike in the case of homogeneous [1] or inhomogeneous contact interactions [2], the emergence of Faraday waves is found to further destabilize the condensate in the presence of strong dipolar interaction. The interesting effect of spatial period doubling of generated density patterns is observed numerically and studied within the Gaussian variational approach.

[1] A. Balaž and A. I. Nicolin, Phys. Rev. A 85, 023613 (2012).

[2] A. Balaž, R. Paun, A. I. Nicolin, S. Balasubramanian, and R. Ramaswamy, Phys. Rev. A 89, 023609 (2014).