Mathematics – Logic
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21537502s&link_type=abstract
American Astronomical Society, AAS Meeting #215, #375.02; Bulletin of the American Astronomical Society, Vol. 42, p.583
Mathematics
Logic
Scientific paper
I present the status of the GammeV Chameleon Afterglow Search (CHASE), a laboratory search for chameleon dark energy. Chameleons are scalar particles with properties that depend upon the density of the local environment. In low-density regions chameleons have small masses and can mediate interactions over cosmological distances. In high-density regions (like metals or glass) chameleons have large masses and consequently interact over very short distances; thereby evading detection by current laboratory experiments. If chameleons couple to photons, then they can be produced by shining light into an evacuated region with a large magnetic field. As the chameleons approach the windows or walls of the vacuum chamber they will reflect if their mass within those materials exceeds the energy of the initial photons. Once the initial light source is turned off, the trapped chameleons will slowly reconvert to photons which then escape the chamber and are detected as an "afterglow" signal.
CHASE Collaboration
Steffen Jason H.
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