Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2007-10-08
Phys.Rev.D77:025016,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 1 figure. Phys. Rev. D in print
Scientific paper
10.1103/PhysRevD.77.025016
We propose an afterglow phenomenon as a unique trace of chameleon fields in optical experiments. The vacuum interaction of a laser pulse with a magnetic field can lead to a production and subsequent trapping of chameleons in the vacuum chamber, owing to their mass dependence on the ambient matter density. Magnetically induced re-conversion of the trapped chameleons into photons creates an afterglow over macroscopic timescales that can conveniently be searched for by current optical experiments. We show that the chameleon parameter range accessible to available laboratory technology is comparable to scales familiar from astrophysical stellar energy loss arguments. We analyze quantitatively the afterglow properties for various experimental scenarios and discuss the role of potential background and systematic effects. We conclude that afterglow searches represent an ideal tool to aim at the production and detection of cosmologically relevant scalar fields in the laboratory.
Gies Holger
Mota David F.
Shaw Douglas J.
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