Jose Beltrán Jiménez, André Luís Delvas Fróes, David Fonseca Mota
A screening mechanism for conformal vector-tensor modifications of general relativity is proposed. The conformal factor depends on the norm of the vector field, and makes the field to vanish in high dense regions, whereas drives it to a non-null value in low density environments. Such process occurs due to a spontaneous symmetry breaking. The cosmology and local constraints are also computed.
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http://arxiv.org/abs/1212.1923
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