Abstract:
In this paper, we have considered the g-essence and its particular cases, k-essence and
f-essence, within the framework of the Einstein-Cartan theory. We have shown that a single
fermionic field can give rise to the accelerated expansion within the Einstein-Cartan theory.
The exact analytical solution of the Einstein-Cartan-Dirac equations is found. This solution
describes the accelerated expansion of the Universe with the equation of state parameter
w = −1 as in the case of CDM model.
