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Chinese Physics Letters

Phonon Spectrum and Modulational Instability in a Bose-Einstein Condensate Array

Xiaoxue Yang, Ying Wu

Published Oct 1, 2002• 16 citations
Publisher

Abstract

We derive the phonon spectrum and the corresponding modulational instability conditions of an array of traps containing Bose-Einstein condensates with each trap linked to adjacent traps by tunnelling. It is shown that modulational instability regimes always exist regardless of the sign of the two-body interaction.
DOI
10.1088/0256-307x/19/10/305

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