Gravitational constant in multiple field gravity

In the present study, we consider general form of the Lagrangian $f(R, ϕ^{I}, X)$, that is a function of the Ricci scalar, multiple scalar fields and non-canonical kinetic terms. We obtain the effective Newton's constant deep inside the Hubble radius. We use Jordan and Einstein frames, and study the conservation of energy-momentum tensor.

No reviews yet.

No comments yet.