Wallis, AOG;
Gardiner, SA;
Hutson, JM;
(2009)
Conical intersections in laboratory coordinates with ultracold molecules.
Phys. Rev. Lett.
, 103
(8)
, Article 083201. 10.1103/PhysRevLett.103.083201.
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Abstract
For two states of opposite parity that cross as a function of an external magnetic field, the addition of an electric field will break the symmetry and induce an avoided crossing. A suitable arrangement of fields may be used to create a conical intersection as a function of external spatial coordinates. We consider the effect of the resulting geometric phase for ultracold polar molecules. For a Bose-Einstein condensate in the mean-field approximation, the geometric phase effect induces stable states of persistent superfluid flow that are characterized by half-integer quantized angular momentum.
| Type: | Article |
|---|---|
| Title: | Conical intersections in laboratory coordinates with ultracold molecules |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.103.083201 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.103.083201 |
| Language: | English |
| Additional information: | Updated metadata, file saved to S: drive, made live (CS 31/7/13) |
| Keywords: | © 2009 The American Physical Society |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1375711 |
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