The gravitational Higgs mechanism and resulting smoking gun effects
arXiv:2012.03710 · doi:10.1103/PhysRevD.102.124065
Abstract
Recently, a toy model was introduced to demonstrate that screening mechanisms in alternative theories of gravitation can hide additional effects. In this model a scalar field is charged under a symmetry. In sufficiently compact objects the scalar field spontaneously grows, i.e. the object scalarizes, spontaneously breaking the symmetry. Exactly as in the Higgs mechanism this leads to the emergence of a mass for the gauge field. The aim of this paper is to provide an example of the physical consequences if we consider this toy model as a prototype of Weak Equivalence Principle (WEP) violations. We model neutron stars with a dipolar magnetic field to compare the magnetic field behaviour of stars in Einstein-Maxwell theory on the one hand and in scalar-tensor theory with the, so-called, gravitational Higgs mechanism on the other hand.
arXiv comment10 pages, 7 figures, accepted for publication: https://journals.aps.org/prd/accepted/b7076Qa8W5d1382365850174af1c0fe844e4b3106
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