A Cosmological Model with Fermionic Field and Gauss-Bonnet Term

Understand

In this work, a cosmological model inspired by string theory with Gauss-Bonnet term coupled to the fermionic field is taken into consideration.

• The self-interaction potential is considered as a combination of the scalar and pseudo-scalar invariants.
• Here the cosmological contribution of the coupling of Gauss-Bonnet term with a non-Dirac fermionic field--characterized by an \textit{interaction term}$L_{DG} ^2$-- is investigated.
• It is observed that the new type of coupling plays a significant role in the accelerating behavior of the universe.