### Abstract

Stable vortex dimers are known to exist in coherently coupled two component Bose-Einstein condensates (BECs). We construct stable vortex trimers in three component BECs and find that the shape can be controlled by changing the internal coherent (Rabi) couplings. Stable vortex N-omers are also constructed in coherently coupled N-component BECs. We classify all possible N-omers in terms of the mathematical graph theory. Next, we study effects of the Rabi coupling in vortex lattices in two-component BECs. We find how the vortex lattices without the Rabi coupling known before are connected to the Abrikosov lattice of integer vortices with increasing the Rabi coupling. In this process, vortex dimers change their partners in various ways at large couplings. We then find that the Abrikosov lattices are robust in three-component BECs.

Original language | English |
---|---|

Pages (from-to) | 177-188 |

Number of pages | 12 |

Journal | Journal of Low Temperature Physics |

Volume | 175 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - 2014 |

### Fingerprint

### Keywords

- Bose-Einstein condensates
- Fractional vortices
- Graph theory
- Multi-component
- Vortex molecules
- Vortices

### ASJC Scopus subject areas

- Condensed Matter Physics
- Atomic and Molecular Physics, and Optics
- Materials Science(all)

### Cite this

*Journal of Low Temperature Physics*,

*175*(1-2), 177-188. https://doi.org/10.1007/s10909-013-0925-3

**Vortex molecules in Bose-Einstein condensates.** / Nitta, Muneto; Eto, Minoru; Cipriani, Mattia.

Research output: Contribution to journal › Article

*Journal of Low Temperature Physics*, vol. 175, no. 1-2, pp. 177-188. https://doi.org/10.1007/s10909-013-0925-3

}

TY - JOUR

T1 - Vortex molecules in Bose-Einstein condensates

AU - Nitta, Muneto

AU - Eto, Minoru

AU - Cipriani, Mattia

PY - 2014

Y1 - 2014

N2 - Stable vortex dimers are known to exist in coherently coupled two component Bose-Einstein condensates (BECs). We construct stable vortex trimers in three component BECs and find that the shape can be controlled by changing the internal coherent (Rabi) couplings. Stable vortex N-omers are also constructed in coherently coupled N-component BECs. We classify all possible N-omers in terms of the mathematical graph theory. Next, we study effects of the Rabi coupling in vortex lattices in two-component BECs. We find how the vortex lattices without the Rabi coupling known before are connected to the Abrikosov lattice of integer vortices with increasing the Rabi coupling. In this process, vortex dimers change their partners in various ways at large couplings. We then find that the Abrikosov lattices are robust in three-component BECs.

AB - Stable vortex dimers are known to exist in coherently coupled two component Bose-Einstein condensates (BECs). We construct stable vortex trimers in three component BECs and find that the shape can be controlled by changing the internal coherent (Rabi) couplings. Stable vortex N-omers are also constructed in coherently coupled N-component BECs. We classify all possible N-omers in terms of the mathematical graph theory. Next, we study effects of the Rabi coupling in vortex lattices in two-component BECs. We find how the vortex lattices without the Rabi coupling known before are connected to the Abrikosov lattice of integer vortices with increasing the Rabi coupling. In this process, vortex dimers change their partners in various ways at large couplings. We then find that the Abrikosov lattices are robust in three-component BECs.

KW - Bose-Einstein condensates

KW - Fractional vortices

KW - Graph theory

KW - Multi-component

KW - Vortex molecules

KW - Vortices

UR - http://www.scopus.com/inward/record.url?scp=84896401912&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896401912&partnerID=8YFLogxK

U2 - 10.1007/s10909-013-0925-3

DO - 10.1007/s10909-013-0925-3

M3 - Article

AN - SCOPUS:84896401912

VL - 175

SP - 177

EP - 188

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 1-2

ER -