Schiff Screening of Relativistic Nucleon Electric-Dipole Moments by Electrons
C.-P. Liu, J. Engel
TL;DR
This paper demonstrates that nucleon electric-dipole moments are fully shielded by electrons at leading order, meaning they do not influence atomic electric-dipole moments, unlike relativistic electron effects.
Contribution
It provides a leading-order multipole analysis showing complete shielding of nucleon EDMs by electrons, clarifying the role of relativistic effects in atomic EDMs.
Findings
Nucleon EDMs are fully shielded by electrons at leading order.
Relativistic electron motion causes non-shielded dipole moments.
The shielding effect persists even when nuclear relativity is considered.
Abstract
We show, at leading-order in the multipole expansion of the electron-nucleus interaction, that nucleon electric-dipole moments are completely shielded by electrons so that they contribute nothing to atomic electric-dipole moments, even when relativity in the nucleus is taken into account. It is well known that relativistic electron motion, by contrast, leads to dipole moments that are not screened; we discuss the reasons for the difference.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.