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). Singapore: World Scientific. doi:10.1142/9789813226609_0478
© 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.
Parent publication ISBN978-981-3226-59-3
ConferenceMarcel Grossmann Meeting
Is part of publicationThe Fourteenth Marcel Grossmann Meeting : On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories
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