title: Magnetically amplified tunneling of the third kind as a probe of minicharged particles.
abstract: We show that magnetic fields significantly enhance a new tunneling mechanism in quantum field theories with photons coupling to fermionic minicharged particles (MCPs). We propose a dedicated laboratory experiment of the light-shining-through-walls type that can explore a parameter regime comparable to and even beyond the best model-independent cosmological bounds. With present-day technology, such an experiment is particularly sensitive to MCPs with masses in and below the meV regime as suggested by new-physics extensions of the standard model.
authors.affiliation: Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena, Jena, Germany.
authors.forename: Babette
authors.initials: B
authors.lastname: Döbrich
authors.forename: Holger
authors.initials: H
authors.lastname: Gies
authors.forename: Norman
authors.initials: N
authors.lastname: Neitz
authors.forename: Felix
authors.initials: F
authors.lastname: Karbstein