TL;DR
This paper derives new exact cosmological solutions within the MOG theory, utilizing Noether symmetry to find conserved quantities and potential forms, and discusses their cosmological implications.
Contribution
It introduces novel exact solutions for MOG cosmology and employs the Noether symmetry approach to determine the vector field potential.
Findings
Exact vacuum and non-vacuum solutions derived
Noether symmetry used to identify conserved quantities
Form of the vector field potential determined
Abstract
We find some new exact cosmological solutions for the covariant scalar-tensor-vector gravity theory, the so-called MOdified Gravity (MOG). The exact solution of the vacuum field equations has been derived. Also, for non vacuum cases we have found some exact solutions with the aid of the Noether symmetry approach. More specifically, the symmetry vector and also the Noether conserved quantity associated to the point-like Lagrangian of the theory have been found. Also we find the exact form of the generic vector field potential of this theory by considering the behavior of the relevant point-like Lagrangian under the infinitesimal generator of the Noether symmetry. Finally, we discuss the cosmological implications of the solutions.
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