The PVLAS experiment: A 25 year effort to measure vacuum magnetic birefringence
By A. Ejlli, F. Valle, U. Gastaldi, G. Messineo, R. Pengo, G. Ruoso, G. Zavattini. 2020
152 citations recorded by the source corpus.
This paper describes the 25 year effort to measure vacuum magnetic birefringence and dichroism with the PVLAS experiment. The experiment went through two main phases: the first using a rotating superconducting magnet and the second using two rotating permanent magnets. The experiment was not able to reach the predicted value from QED. Nonetheless the experiment set the current best limits on vacuum magnetic birefringence and dichroism for a field of $B_{\rm ext} = 2.5$ T, namely, $\Delta n^{\rm (PVLAS)} = (12\pm17)\times10^{-23}$ and $|\Delta\kappa|^{\rm (PVLAS)} = (10\pm28)\times10^{-23}$. The uncertainty on $\Delta n^{\rm (PVLAS)}$ is about a factor 7 above the predicted value of $\Delta n^{\rm (QED)} = 2.5\times10^{-23}$ @ 2.5 T.
Subfields: Atomic and Molecular Physics, and Optics, Spectroscopy
View Paper: https://www.semanticscholar.org/paper/fe9420a8b8a98fae8f59779737bdf9080f340496
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Introductory Notes on Non‐linear Electrodynamics and its Applications (2021, background): “The PVLAS experimental bound (61) allows to estimate a bound on the value of the coupling constant 𝛾 of the ModMax electrodynamics which (as follows from (60)) is 𝛾 ≤ 3 ⋅ 10−22 .”