Hidden in the light: Magnetically induced afterglow from trapped chameleon fields

Journal Article · Tue Jan 15 04:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.025016· OSTI ID:21038955

Gies, Holger; Mota, David F ^[1]; Shaw, Douglas J ^[2]

---

1. Institut fuer Theoretische Physik, Universitaet Heidelberg, D-69120 Heidelberg (Germany)
2. Astronomy Unit, School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS (United Kingdom)

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 reconversion 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.

• OSTI ID: 21038955
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 2 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AFTERGLOW
ASTROPHYSICS
COSMOLOGY
ENERGY LOSSES
LASER RADIATION
MAGNETIC FIELDS
PARTICLE IDENTIFICATION
PHOTONS
POTENTIALS
SCALAR FIELDS
TRAPPING