J. Aldegunde
Hyperfine energy levels of alkali-metal dimers: Ground-state homonuclear molecules in magnetic fields
Aldegunde, J.; Hutson, Jeremy M.
Abstract
We investigate the hyperfine energy levels and Zeeman splittings for homonuclear alkali-metal dimers in low-lying rotational and vibrational states, which are important for experiments designed to produce quantum gases of deeply bound molecules. We carry out density-functional theory calculations of the nuclear hyperfine coupling constants. For nonrotating states, the zero-field splittings are determined almost entirely by the scalar nuclear spin-spin coupling constant. By contrast with the heteronuclear case, the total nuclear spin remains a good quantum number in a magnetic field. We also investigate levels with rotational quantum number N=1, which have long-range anisotropic quadrupole-quadrupole interactions and may be collisionally stable. For these states the splitting is dominated by nuclear quadrupole coupling for most of the alkali-metal dimers and the Zeeman splittings are considerably more complicated.
Citation
Aldegunde, J., & Hutson, J. M. (2009). Hyperfine energy levels of alkali-metal dimers: Ground-state homonuclear molecules in magnetic fields. Physical Review A, 79(1), Article 013401. https://doi.org/10.1103/physreva.79.013401
Journal Article Type | Article |
---|---|
Publication Date | Jan 1, 2009 |
Deposit Date | Jun 19, 2013 |
Publicly Available Date | Jul 12, 2013 |
Journal | Physical Review A |
Print ISSN | 1050-2947 |
Electronic ISSN | 1094-1622 |
Publisher | American Physical Society |
Peer Reviewed | Peer Reviewed |
Volume | 79 |
Issue | 1 |
Article Number | 013401 |
DOI | https://doi.org/10.1103/physreva.79.013401 |
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Copyright Statement
© 2009 The American Physical Society
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