Odd-petal states and persistent flows in spin-orbit-coupled Bose-Einstein condensates
We study the phase diagram of a Rashba spin-orbit-coupled Bose-Einstein condensate confined in a two-dimensional toroidal trap. In the immiscible regime we find an azimuthally periodic density distribution, with the periodicity highly tuneable as a function of the spin-orbit coupling strength and wh...
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| creator | White, Angela C Zhang, Yongping Busch, Thomas |
| description | We study the phase diagram of a Rashba spin-orbit-coupled Bose-Einstein condensate confined in a two-dimensional toroidal trap. In the immiscible regime we find an azimuthally periodic density distribution, with the periodicity highly tuneable as a function of the spin-orbit coupling strength and which favours an odd number of petals in each component. This allows for a wide range of states that can be created. We further show that in the miscible regime, both components possess states with persistent flows with a unit winding number difference between them and with the absolute values of these winding numbers depending on the spin-orbit coupling strength. All features of the odd-petal and the persistent flow states can be explained using a simple but effective model. |
| doi_str_mv | 10.48550/arxiv.1612.01713 |
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| subjects | Bose-Einstein condensates Density distribution Matter & antimatter Miscibility Periodic variations Phase diagrams Physics - Quantum Gases Spin-orbit interactions Winding |
| title | Odd-petal states and persistent flows in spin-orbit-coupled Bose-Einstein condensates |
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