Enhanced effect of temporal variation of the fine structure constant and strong interaction in 229Th

2006/04/30 by V. V. Flambaum · 2 citations
Physics and Astronomy · #physics.atom-ph #hep-ph #nucl-ex #nucl-th

paper · pdf

published as Phys.Rev.Lett.97,092502(2006) · 3 pages, reference [13] added to v2

arxiv created 2011/11/21 · arxiv updated 2011/11/23

Abstract

The relative effects of variation of the fine structure constant alpha=e²/hc and dimensionless strong interaction parameter m_q/Lambda_QCD are enhanced 5-6 orders of magnitude in very narrow ultraviolet transition between the ground and first excited state in 229Th nucleus (energy (3.5 +/- 1) eV). Corresponding experiment has potential of improving sensitivity to the variation of the fundamental constants by 7-10 orders of magnitude (up to 10^-23 per year).

Cited by

• A nuclear clock based on ²²⁹Th
• A thorium-229 optical nuclear clock with feedback loop