A gravity term from spontaneous symmetry breaking
In this model, the gravity term in the Lagrangean comes from spontaneous symmetry breaking of an additional scalar quadruplet field $Υ$. The resulting gravitational field is approximate to one of the models of coframe gravity with parameters $ρ_1 + 4 ρ_2 = 0$, $ρ_3 = 0$. This article includes an exact solution of coframe gravity with model parameters $ρ_1 \neq 0$, $ρ_2$ any, $ρ_3 = 0$, which is Newtonian at infinity. An iteration process is given to construct a solution for a given matter-radiation stress-energy tensor.
gr-qc↗