A Kaluza-Klein Inspired Brans-Dicke Gravity with Dark Matter and Dark Energy Model

Understand

We propose the Kaluza-Klein inspired Brans-Dicke gravity model containing possible existence of dark matter and dark energy.

• The massive scalar field coupled with gravity in 5 dimensional spacetime can be reduced to 4 dimensional gravity along with the dilaton $\phi$, gauge fields $A_{\mu}$, and the tower of scalar fields $\eta_n$.
• Two additional gauge fields are introduced to form "Cosmic Triad" vector field scenario.
• We then use the dynamical system approach to analyze the critical points and their corresponding physical parameters.