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Swallowtail Structure in Fermi Superfluids with Periodically Modulated Interactions by Yu, Dongyang; Yi, Wei; Zhang, Wei is a scholarly article available to read on EtoBox.

What is Swallowtail Structure in Fermi Superfluids with Periodically Modulated Interactions about?

We study the superfluid flow in a quasi-one-dimensional Fermi gas with spatially modulated interactions induced by an optical Feshbach resonance. Due to the competition between the periodicity of the modulated interaction and the nonlinearity of the background interaction, an interesting swallowtail structure emerges in the energy spectrum under appropriate parameters. As the interaction strengths are tuned, the swallowtail structure may disappear, giving rise to various different states on a rich phase diagram. We investigate the spatial distribution of the order parameter and the particle density under various parameters, which are useful for the experimental detection of the interesting phases in these systems.

Author

Yu, Dongyang; Yi, Wei; Zhang, Wei

Published

2015

Language

EN