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Hannover 2013 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 36: Ultra-cold atoms, ions and BEC IV (with A)

Q 36.2: Talk

Wednesday, March 20, 2013, 11:15–11:30, F 428

Density waves in dipolar Bose-Einstein condensates — •Alexandru Nicolin — Horia Hulubei National Institute for Physics and Nuclear Engineering, Magurele, Romania

Density waves in cigar-shaped dipolar Bose-Einstein condensates are analysed by variational means and we show analytically how the dipole-dipole interaction between the atoms generates a roton-maxon excitation spectrum. A simple model is used to derive the effective equations which describe the emergence of the density waves.

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