p-wave stabilization of three-dimensional Bose-Fermi solitons
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- Dr Nicholas Parker
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| Author(s) | | Parker NG, Smith DA |
| Publication type | | Article |
| Journal | | Physical Review A |
| Year | | 2012 |
| Volume | | 85 |
| Issue | | 1 |
| Pages | | |
| ISSN (print) | | 0556-2791 |
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| Full text is available for this publication: |
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| We explore bright soliton solutions of ultracold Bose-Fermi gases, showing that the presence of p-wave interactions can remove the usual collapse instability and support stable soliton solutions that are global energy minima. A variational model that incorporates the relevant s- and p-wave interactions in the system is established analytically and solved to probe the dependencies of the soliton stationary states on key experimental parameters. Under attractive s-wave interactions, bright solitons exist only as metastable states susceptible to collapse. Remarkably, the presence of repulsive p-wave interactions alleviates this collapse instability. This dramatically widens the range of experimentally achievable soliton solutions and indicates greatly enhanced robustness. While we focus specifically on the boson-fermion pairing of 87Rb and 40K, the stabilization inferred by repulsive p-wave interactions should apply to the wider remit of ultracold Bose-Fermi mixtures. |
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| Publisher | | American Physical Society |
| URL | | http://link.aps.org/doi/10.1103/PhysRevA.85.013604 |
| DOI | | 10.1103/PhysRevA.85.013604 |
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