The transverse breathing mode of an elongated Bose-Einstein condensate

Abstract

We study experimentally the transverse monopole mode of an elongated rubidium condensate. Due to the scaling invariance of the non-linear Schrödinger (Gross-Pitaevski) equation, the oscillation is monochromatic and sinusoidal at short times, even under strong excitation. For ultra-low temperatures, the quality factor $Q={\omega }_0/{\gamma }_0$ can exceed 2000, where ${\omega }_0$ and ${\gamma }_0$ are the mode angular frequency and damping rate. This value is much larger than any previously reported for other eigenmodes of a condensate. We also present the temperature variation of ${\omega }_0$ and ${\gamma }_0$.

4 pages, 4 figures, submitted to PRL

References in corpus (1)

• Finite-temperature simulations of the scissors mode in Bose-Einstein condensed gases

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