Figure 1

The above figure demonstrates the evolution of the equation of state (EoS) parameter $\omega \equiv p/\rho$ for the Galileon field coupled to spacetime torsion. The black line stands for the $\omega =-1/3$, such that if any curve for $\omega$ are below this line, it will lead to accelerating expansion. However as current observational estimates suggest [7], ${\omega }_0=-1$ is more favored as late time cosmic acceleration is concerned. As evident there are two cases—(i) Case B: In which fields except the gauge field is evolving as power law, while gauge field is evolving exponentially; (iii) Case E: In which the power law behavior of the fields are different and $\alpha$ is small, we have late time cosmic acceleration in our model in the present epoch. See text for more discussions.