Investigating new forms of gravity-matter couplings in the gravitational field equations
Investigating new forms of gravity-matter couplings in the gravitational field equations
This paper proposes a toy model where, in the Einstein equations, the right-hand side is modified by the addition of a term proportional to the symmetrized partial contraction of the Ricci tensor with the energy-momentum tensor, while the left-hand side remains equal to the Einstein tensor. Bearing in mind the …