We investigate the evolution of the gravitational potential in Rastall scalar field theories. In a single component model a consistent perturbation theory, formulated in the newtonian gauge, is possible only for $gamma = 1$, which is the General Relativity limit. On the other hand, the addition of another canonical fluid component allows also to consider the case $gamma eq 1$.

Note on the Evolution of the Gravitational Potential in Rastall Scalar Field Theories

PIATTELLA O
2012-01-01

Abstract

We investigate the evolution of the gravitational potential in Rastall scalar field theories. In a single component model a consistent perturbation theory, formulated in the newtonian gauge, is possible only for $gamma = 1$, which is the General Relativity limit. On the other hand, the addition of another canonical fluid component allows also to consider the case $gamma eq 1$.
2012
http://dx.doi.org/10.1016/j.physletb.2012.04.020
RASTALL THEORY; MODIFIED THEORY OF GRAVITY; SCALAR FIELD COSMOLOGY; GRAVITATIONAL POTENTIAL
J. C., Fabris; M., Hamani Daouda; Piattella, O
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2124993
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