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Quantum Phases of Attractive Matter Waves in a Toroidal Trap

A. Parola·L. Salasnich·R. Rota·L. Reatto
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Abstract

Investigating the quantum phase transition in a ring from a uniform attractive Bose-Einstein condensate to a localized bright soliton we find that the soliton undergoes transverse collapse at a critical interaction strength, which depends on the ring dimensions. In addition, we predict the existence of other soliton configurations with many peaks, showing that they have a limited stability domain. Finally, we show that the phase diagram displays several new features when the toroidal trap is set in rotation.

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A. Parola, L. Salasnich, R. Rota, L. Reatto. 2005-11-03. Quantum Phases of Attractive Matter Waves in a Toroidal Trap. https://doi.org/10.1103/physreva.72.063612

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