ACCELERATED UNIVERSE FROM G-ESSENCE

F.B. Belisarova; K.K. Yerzhanov; P.Yu. Tsyba; Sh.R. Myrzakul; I.I. Kulnazarov

ACCELERATED UNIVERSE FROM G-ESSENCE

Авторлар

F.B. Belisarova Al-Farabi Kazakh National University, Kazakstan, Almaty
K.K. Yerzhanov L.N. Gumilev Eurasian National University, Astana, Kazakhstan
P.Yu. Tsyba L.N. Gumilev Eurasian National University, Astana, Kazakhstan
Sh.R. Myrzakul L.N. Gumilev Eurasian National University, Astana, Kazakhstan
I.I. Kulnazarov L.N. Gumilev Eurasian National University, Astana, Kazakhstan

Аңдатпа

In the present work we analyze the g-essence model for the particular Lagrangian: L=R+2[aXⁿ+eY-V(y/,y)]. The g-essence models were proposed recently as an alternative and as a generalization to the scalar k-essence. We have presented the 3 types solutions of the g-essence model. We reconstructed the corresponding potentials and the dynamics of the scalar and fermionic fields according the evolution of the scale factor. The obtained results show that the g-essence model can describes the decelerated and accelerated expansion phases of the universe.