ACCELERATED UNIVERSE FROM G-ESSENCE

Authors

  • 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

Abstract

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.

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Published

2017-11-01

Issue

Vol. 2011 No. 1 (2011): KazNU Bulletin. Physics series

Section

Theoretical Physics. Nuclear and Elementary Particle Physics. Astrophysics

How to Cite

ACCELERATED UNIVERSE FROM G-ESSENCE. (2017). Recent Contributions to Physics, 2011(1), 86-92. https://bph.kaznu.kz/index.php/zhuzhu/article/view/993

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