Chameleon fragmentation - CEA - Commissariat à l’énergie atomique et aux énergies alternatives Access content directly
Journal Articles Journal of Cosmology and Astroparticle Physics Year : 2014

Chameleon fragmentation

Abstract

A scalar field dark energy candidate could couple to ordinary matter and photons, enabling its detection in laboratory experiments. Here we study the quantum properties of the chameleon field, one such dark energy candidate, in an "afterglow" experiment designed to produce, trap, and detect chameleon particles. In particular, we investigate the possible fragmentation of a beam of chameleon particles into multiple particle states due to the highly non-linear interaction terms in the chameleon Lagrangian. Fragmentation could weaken the constraints of an afterglow experiment by reducing the energy of the regenerated photons, but this energy reduction also provides a unique signature which could be detected by a properly-designed experiment. We show that constraints from the CHASE experiment are essentially unaffected by fragmentation for $\phi^4$ and $1/\phi$ potentials, but are weakened for steeper potentials, and we discuss possible future afterglow experiments.
Fichier principal
Vignette du fichier
br1Up1.pdf (766.23 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

cea-00983454 , version 1 (14-10-2022)

Licence

Attribution

Identifiers

Cite

Philippe Brax, Amol Upadhye. Chameleon fragmentation. Journal of Cosmology and Astroparticle Physics, 2014, 2014, pp.018. ⟨10.1088/1475-7516/2014/02/018⟩. ⟨cea-00983454⟩
122 View
7 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More