G-essence with Yukawa Interactions

We study the g-essence model with Yukawa interactions between a scalar field \(\phi\) and a Dirac field \(\psi\). For the homogeneous, isotropic and flat Friedmann-Robertson-Walker universe filled with the such g-essence, the exact solution of the model is found. Moreover, we reconstruct the corresp...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2011-07
Main Authors: Kulnazarov, I, Yerzhanov, K, Razina, O, Myrzakul, Sh, Tsyba, P, Myrzakulov, R
Format: Article
Language:English
Subjects:
Chaplygin gas
Dark energy
Dark matter
Universe
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We study the g-essence model with Yukawa interactions between a scalar field \(\phi\) and a Dirac field \(\psi\). For the homogeneous, isotropic and flat Friedmann-Robertson-Walker universe filled with the such g-essence, the exact solution of the model is found. Moreover, we reconstruct the corresponding scalar and fermionic potentials which describe the coupled dynamics of the scalar and fermionic fields. It is shown that some particular g-essence models with Yukawa interactions correspond to the usual and generalized Chaplygin gas unified models of dark energy and dark matter. Also we present some scalar-fermionic Dirac-Born-Infeld models corresponding g-essence models with Yukawa interactions which again describe the unified dark energy-dark matter system.
ISSN:2331-8422
DOI:10.48550/arxiv.1012.4669