String-inspired Teleparallel cosmology

The present paper represents an attempt for a very generic string inspired theory of gravitation, based on stringy action in the teleparallel gravity which includes specific functional depends scalar field and its kinetic energy, as well torsion boundary terms, embedding also possible effects from Gauss–Bonnet invariants. We focus our study FLRW cosmology. After we deduce cosmological equations associated couplings are studied by considering different analytical techniques. first technique is linear stability theory, introducing proper dimensionless variables enables us to structure phase space physical effects. In this case have obtained solutions corresponds matter dark energy dominated solutions, achieving transition between epochs. For each type discussed corresponding features, attaining viable constraints coupling constants due dynamical features included numerical analysis fine–tuning initial conditions deep into era, obtaining trajectories effective equation state functions.