Nonlinear isotope-shift effects in Be-like, B-like, and C-like argon

authored by: Vladimir A. Yerokhin, Robert A. Müller, A. Surzhykov, Peter Micke, Piet Oliver Schmidt
Abstract: Violation of linearity of the King plot is investigated for a chain of partially stripped argon isotopes. The nonlinearity originates within the standard model from subtle contributions to the isotope shifts from next-to-leading order effects, which have never been systematically studied so far. In light atoms these nonlinear effects are dominated by the quadratic nuclear recoil (1/M2, where M is the nuclear mass). Large-scale relativistic calculations of the linear and quadratic mass shift and the field shift are performed for the 2P fine-structure transitions in Be-like, B-like, and C-like argon ions. Nonlinearities of the King plots from 5 to 30 kHz are found, which is four orders of magnitude larger than previous estimates in comparable systems. Accurate calculations of these effects are vital for identification of possible nonlinearities originating from physics beyond the standard model.
Organisation(s): Institute of Quantum Optics
QuantumFrontiers
External Organisation(s): National Metrology Institute of Germany (PTB)
St. Petersburg State Polytechnical University
Technische Universität Braunschweig
Max Planck Institute for Nuclear Physics
Type: Article
Journal: Physical Review A
Volume: 101
ISSN: 2469-9926
Publication date: 06.01.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): http://arxiv.org/pdf/1910.05524 (Access: Open)
https://doi.org/10.1103/PhysRevA.101.012502 (Access: Closed)

BibTeX

@article{a3c65a92349a4b34ab0a9809cd686726,
title = "Nonlinear isotope-shift effects in Be-like, B-like, and C-like argon",
abstract = "Violation of linearity of the King plot is investigated for a chain of partially stripped argon isotopes. The nonlinearity originates within the standard model from subtle contributions to the isotope shifts from next-to-leading order effects, which have never been systematically studied so far. In light atoms these nonlinear effects are dominated by the quadratic nuclear recoil (1/M2, where M is the nuclear mass). Large-scale relativistic calculations of the linear and quadratic mass shift and the field shift are performed for the 2P fine-structure transitions in Be-like, B-like, and C-like argon ions. Nonlinearities of the King plots from 5 to 30 kHz are found, which is four orders of magnitude larger than previous estimates in comparable systems. Accurate calculations of these effects are vital for identification of possible nonlinearities originating from physics beyond the standard model.",
author = "Yerokhin, {Vladimir A.} and M{\"u}ller, {Robert A.} and A. Surzhykov and Peter Micke and Schmidt, {Piet Oliver}",
note = "Funding information: Valuable conversations with I. I. Tupitsyn are gratefully acknowledged. The work is supported by the German Research Foundation (DFG) under the Projects SU 658/4-1, No. SCHM2678/5-1, and the Cluster of Excellence EXC2123 QuantumFrontiers. V.A.Y. acknowledges support by the Ministry of Education and Science of the Russian Federation Grant No. 3.5397.2017/6.7.",
year = "2020",
month = jan,
day = "6",
doi = "10.1103/PhysRevA.101.012502",
language = "English",
volume = "101",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "1",
}