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Testing New Scalar Interactions in Few-Electron Highly Charged Ions
M. Moretti, C. de Jonge, J. Jaeckel +2
We investigate how a hypothetical scalar boson mediating an interaction between electrons as well as between electrons and nucleons would affect the g factor of lithium-like highly…
Intrinsic Nonlocality of Spin- and Polarization-Resolved Probabilities in Strong-Field Quantum Electrodynamics
Samuele Montefiori, Antonino Di Piazza, Tobias Podszus +2
Spin and polarization are central to precision tests of fundamental physics and for interpreting radiation from astrophysical sources and ultraintense laser-matter experiments. Her…
Stringent Constraints on New Pseudoscalar & Vector Bosons from Precision Hyperfine Splitting Measurements
Cedric de Jonge, Fabian Heiße, Joerg Jaeckel +3
Axion-like particles and similar new pseudoscalar as well as vector bosons coupled to nucleons and electrons are predicted to lead to spin-dependent forces in atoms and ions. We ar…
Observation of quantum effects on radiation reaction in strong fields
Eva E. Los, Elias Gerstmayr, Christopher Arran +28
Radiation reaction, the force experienced by an accelerated charge due to radiation emission, has long been the subject of extensive theoretical and experimental research. Experime…
Laser-driven lepton polarization in the quantum radiation-dominated reflection regime
Kai-Hong Zhuang, Yue-Yue Chen, Yan-Fei Li +2
Generation of ultrarelativistic polarized leptons during interaction of an ultrarelativistic electron beam with a counterpropagating ultraintense laser pulse is investigated in the…
Challenging Beyond-the-Standard-Model Solutions to the Fine-Structure Anomaly in Heavy Muonic Atoms
K. A. Beyer, I. A. Valuev, C. H. Keitel +2
The leading-order contribution of a new boson to the muonic fine-structure anomaly, which refers to a discrepancy between the predicted transition energies and spectroscopic measur…