Einstein-Cartan gravity with scalar-fermion interactions
  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 $\Lambda$CDM model.
