Variation of fundamental constants and 229Th
Feldmeier, H., Litvinova, E., Flambaum, V., & Dobaczewski, J. (2017). Variation of fundamental constants and 229Th. In M. Bianchi, & R. T. Jantzen (Eds.), The Fourteenth Marcel Grossmann Meeting : On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories (pp. 3670-3675). World Scientific. https://doi.org/10.1142/9789813226609_0478
Date
2017Copyright
© Authors & World Scientific, 2017
The first excited state of the nucleus229Th has an exceptionally small excitation energy of7.8 eV, which is expected to be very sensitive to changes in the fine structure constant α.A small difference in the Coulomb energies of the two states, which both are of the order109eV, would amplify variations in α into large variations of the transition frequency.Hartree-Fock and Hartree-Fock-Bogoliubov calculations are performed to compute theCoulomb energies of the two states. The kinetic energies are also calculated which reflecta possible variation in the nucleon or quark masses or local Lorentz invariance violation.
Publisher
World ScientificParent publication ISBN
978-981-3226-59-3Conference
Marcel Grossmann MeetingIs part of publication
The Fourteenth Marcel Grossmann Meeting : On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field TheoriesPublication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/27396394
Metadata
Show full item recordCollections
License
Except where otherwise noted, this item's license is described as CC BY-NC 4.0