Breit Interaction and Parity Non-conservation in Many-Electron Atoms

Abstract

We present accurate {\em ab initio} non-perturbative calculations of the Breit correction to the parity non-conserving (PNC) amplitudes of the $6s-7s$ and $6s-5d_{3/2}$ transitions in Cs, $7s-8s$ and $7s-6d_{3/2}$ transitions in Fr, $6s-5d_{3/2}$ transition in Ba${}^{+}$, $7s-6d_{3/2}$ transition in Ra${}^{+}$, and $6p_{1/2}-6p_{3/2}$ transition in Tl. The results for the $6s-7s$ transition in Cs and $7s-8s$ transition in Fr are in good agreement with other calculations while calculations for other atoms/transitions are presented for the first time. We demonstrate that higher-orders many-body corrections to the Breit interaction are especially important for the $s-d$ PNC amplitudes. We confirm good agreement of the PNC measurements for cesium and thallium with the standard model .

9 pages, 1 figure

References in corpus (3)

• Violations of fundamental symmetries in atoms and tests of unification theories of elementary particles
• Radiative corrections and parity nonconservation in heavy atoms
• QED corrections to the parity-nonconserving 6s-7s amplitude in ${}^{133}$Cs

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