title: Laboratory constraints on chameleon dark energy and power-law fields.
abstract: We report results from a search for chameleon particles created via photon-chameleon oscillations within a magnetic field. This experiment is sensitive to a wide class of unexplored chameleon power-law and dark energy models. These results exclude 5 orders of magnitude in the coupling of chameleons to photons covering a range of 4 orders of magnitude in chameleon effective mass and, for individual models, exclude between 4 and 12 orders of magnitude in chameleon couplings to matter.
authors.affiliation: Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA.
authors.forename: J H
authors.initials: JH
authors.lastname: Steffen
authors.forename: A
authors.initials: A
authors.lastname: Upadhye
authors.forename: A
authors.initials: A
authors.lastname: Baumbaugh
authors.forename: A S
authors.initials: AS
authors.lastname: Chou
authors.forename: P O
authors.initials: PO
authors.lastname: Mazur
authors.forename: R
authors.initials: R
authors.lastname: Tomlin
authors.forename: A
authors.initials: A
authors.lastname: Weltman
authors.forename: W
authors.initials: W
authors.lastname: Wester