G-essence cosmologies with scalar-fermion interactions
  We study the two particular models of g-essence with Yukawa type interactions between a scalar field $\phi$ and a classical Dirac field $\psi$. For the homogeneous, isotropic and flat Friedmann-Robertson-Walker universe filled with the such g-essence, some exact solutions of these models are found. Moreover, we reconstruct the corresponding scalar and fermionic potentials. 
O.V. Razina, Y.M. Myrzakulov, N.S. Serikbayev, Sh.R. Myrzakul, G.N.   Nugmanova and R. Myrzakulov
astro-ph.CO gr-qc hep-ph hep-th