Gravitational constant in multiple field gravity

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Published 18 May 2015 © 2015 IOP Publishing Ltd and Sissa Medialab srl
, , Citation Habib Abedi and Amir M. Abbassi JCAP05(2015)026 DOI 10.1088/1475-7516/2015/05/026

1475-7516/2015/05/026

Abstract

In the present study, we consider general form of the Lagrangian  f(R, ϕIX) , 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.

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10.1088/1475-7516/2015/05/026