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arXiv · 1203.4986

Magnetically amplified light-shining-through-walls via virtual minicharged particles

Babette Döbrich·Holger Gies·Norman Neitz·Felix Karbstein
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Abstract

We show that magnetic fields have the potential to significantly enhance a recently proposed light-shining-through-walls scenario in quantum-field theories with photons coupling to minicharged particles. Suggesting a dedicated laboratory experiment, we demonstrate that this particular tunneling scenario could provide access to a parameter regime competitive with the currently best direct laboratory limits on minicharged fermions below the $\mathrm{meV}$ regime. With present day technology, such an experiment has the potential to even overcome the best model-independent cosmological bounds on minicharged fermions with masses below $\mathcal{O} (10^{-4}) \mathrm{eV}$.

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Babette Döbrich, Holger Gies, Norman Neitz, Felix Karbstein. 2013-01-23. Magnetically amplified light-shining-through-walls via virtual minicharged particles. https://doi.org/10.1103/physrevd.87.025022

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