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Title: Chameleon induced atomic afterglow

Abstract

The chameleon is a scalar field whose mass depends on the density of its environment. Chameleons are necessarily coupled to matter particles and will excite transitions between atomic energy levels in an analogous manner to photons. When created inside an optical cavity by passing a laser beam through a constant magnetic field, chameleons are trapped between the cavity walls and form a standing wave. This effect will lead to an afterglow phenomenon even when the laser beam and the magnetic field have been turned off, and could be used to probe the interactions of the chameleon field with matter.

Authors:
 [1];  [2]
  1. Institut de Physique Theorique, CEA, IPhT, CNRS, URA2306, F-91191 Gif-sur-Yvette cedex (France)
  2. Theory Group, Deutsches Elektronen-Synchrotron DESY, D-22603, Hamburg (Germany)
Publication Date:
OSTI Identifier:
21513055
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 82; Journal Issue: 9; Other Information: DOI: 10.1103/PhysRevD.82.095014; (c) 2010 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; AFTERGLOW; BEAMS; INTERACTIONS; LASER RADIATION; MAGNETIC FIELDS; MASS; NUCLEAR ENERGY; PHOTONS; SCALAR FIELDS; STANDING WAVES; BOSONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; ENERGY; MASSLESS PARTICLES; RADIATIONS

Citation Formats

Brax, Philippe, and Burrage, Clare. Chameleon induced atomic afterglow. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.095014.
Brax, Philippe, & Burrage, Clare. Chameleon induced atomic afterglow. United States. doi:10.1103/PHYSREVD.82.095014.
Brax, Philippe, and Burrage, Clare. 2010. "Chameleon induced atomic afterglow". United States. doi:10.1103/PHYSREVD.82.095014.
@article{osti_21513055,
title = {Chameleon induced atomic afterglow},
author = {Brax, Philippe and Burrage, Clare},
abstractNote = {The chameleon is a scalar field whose mass depends on the density of its environment. Chameleons are necessarily coupled to matter particles and will excite transitions between atomic energy levels in an analogous manner to photons. When created inside an optical cavity by passing a laser beam through a constant magnetic field, chameleons are trapped between the cavity walls and form a standing wave. This effect will lead to an afterglow phenomenon even when the laser beam and the magnetic field have been turned off, and could be used to probe the interactions of the chameleon field with matter.},
doi = {10.1103/PHYSREVD.82.095014},
journal = {Physical Review. D, Particles Fields},
number = 9,
volume = 82,
place = {United States},
year = 2010,
month =
}
  • 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 quantitativelymore » 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.« less
  • We present data from our investigation of the anomalous orange-colored afterglow that was seen in the GammeV Chameleon Afterglow Search (CHASE). These data include information about the broadband color of the observed glow, the relationship between the glow and the temperature of the apparatus, and other data taken prior to, and during the science operations of CHASE. While differing in several details, the generic properties of the afterglow from CHASE are similar to luminescence seen in some vacuum compounds. Contamination from this, or similar, luminescent signatures will likely impact the design of implementation of future experiments involving single photon detectorsmore » and high intensity light sources in a cryogenic environment.« less
  • Cited by 1
  • The GammeV experiment has constrained the couplings of chameleon scalar fields to matter and photons. Here we present a detailed calculation of the chameleon afterglow rate underlying these constraints. The dependence of GammeV constraints on various assumptions in the calculation is studied. We discuss GammeV-CHASE, a second-generation GammeV experiment, which will improve upon GammeV in several major ways. Using our calculation of the chameleon afterglow rate, we forecast model-independent constraints achievable by GammeV-CHASE. We then apply these constraints to a variety of chameleon models, including quartic chameleons and chameleon dark energy models. The new experiment will be able to probemore » a large region of parameter space that is beyond the reach of current tests, such as fifth force searches, constraints on the dimming of distant astrophysical objects, and bounds on the variation of the fine structure constant.« less
  • The GammeV experiment has constrained the couplings of chameleon scalar fields to matter and photons. Here, we present a detailed calculation of the chameleon afterglow rate underlying these constraints. The dependence of GammeV constraints on various assumptions in the calculation is studied. We discuss the GammeV-CHameleon Afterglow SEarch, a second-generation GammeV experiment, which will improve upon GammeV in several major ways. Using our calculation of the chameleon afterglow rate, we forecast model-independent constraints achievable by GammeV-CHameleon Afterglow SEarch. We then apply these constraints to a variety of chameleon models, including quartic chameleons and chameleon dark energy models. The new experimentmore » will be able to probe a large region of parameter space that is beyond the reach of current tests, such as fifth force searches, constraints on the dimming of distant astrophysical objects, and bounds on the variation of the fine structure constant.« less