Service interruption on Monday 11 July from 12:30 to 13:00: all the sites of the CCSD (HAL, EpiSciences, SciencesConf, AureHAL) will be inaccessible (network hardware connection).
Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

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.
Document type :
Preprints, Working Papers, ...
Complete list of metadata
Contributor : Emmanuelle De Laborderie Connect in order to contact the contributor
Submitted on : Friday, April 25, 2014 - 12:03:25 PM
Last modification on : Wednesday, September 12, 2018 - 2:13:46 PM

Links full text


  • HAL Id : cea-00983454, version 1
  • ARXIV : 1312.2747



Philippe Brax, Amol Upadhye. Chameleon Fragmentation. 2013. ⟨cea-00983454⟩



Record views