  We describe a symmetron model in which the screening of fifth forces arises
at the one-loop level through the Coleman-Weinberg mechanism of spontaneous
symmetry breaking. We show that such a theory can avoid current constraints on
the existence of fifth forces but still has the potential to give rise to
observable deviations from general relativity, which could be seen in cold atom
experiments.

General Relativity and Quantum Cosmology;Cosmology and Nongalactic Astrophysics;High Energy Physics - Phenomenology;High Energy Physics - Theory