A new formulation of the relativistic many-body theory of electric dipole moments of closed shell atoms

TL;DR

This paper presents a highly accurate relativistic coupled-cluster calculation of the electric dipole moment of atomic $^{199}{ m Hg}$ due to the nuclear Schiff moment, providing insights into fundamental P and T violation and setting new limits on tensor-pseudo tensor interactions.

Contribution

The paper introduces the most precise calculation to date of atomic EDMs from the nuclear Schiff moment using relativistic coupled-cluster theory, linking atomic measurements to fundamental particle physics.

Findings

Most accurate calculation of atomic EDM from Schiff moment

New limits on tensor-pseudo tensor induced EDM

Enhanced understanding of P and T violating interactions

Abstract

The electric dipole moments of closed-shell atoms are sensitive to the parity and time-reversal violating phenomena in the nucleus. The nuclear Schiff moment is one such property, it arises from the parity and time reversal violating quark-quark interactions and the quark-chromo electric dipole moments. We calculate the electric dipole moment of atomic $^{199}{\rm Hg}$ arising from the nuclear Schiff moment using the relativistic coupled-cluster theory. This is the most accurate calculation of the quantity to date. Our calculations in combination with the experiment data provide important insights to the P and T violating coupling constants at the elementary particle level. In addition, a new limit on the tensor-pseudo tensor induced atomic EDM, calculated using the relativistic coupled-cluster theory is also presented.