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Conical intersections in laboratory coordinates with ultracold molecules

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. Green open access

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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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