Exact solutions in a scalar-tensor model of dark energy
Journal Article
·
· Journal of Cosmology and Astroparticle Physics
We consider a model of scalar field with non minimal kinetic and Gauss Bonnet couplings as a source of dark energy. Based on asymptotic limits of the generalized Friedmann equation, we impose restrictions on the kinetic an Gauss-Bonnet couplings. This restrictions considerable simplify the equations, allowing for exact solutions unifying early time matter dominance with transitions to late time quintessence and phantom phases. The stability of the solutions in absence of matter has been studied.
- OSTI ID:
- 22279936
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2012, Issue 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
Similar Records
Gauss-Bonnet dark energy
Gauss-Bonnet quintessence: Background evolution, large scale structure, and cosmological constraints
Aspects of scalar field dynamics in Gauss-Bonnet brane worlds
Journal Article
·
Wed Jun 15 00:00:00 EDT 2005
· Physical Review. D, Particles Fields
·
OSTI ID:22279936
Gauss-Bonnet quintessence: Background evolution, large scale structure, and cosmological constraints
Journal Article
·
Mon Jan 15 00:00:00 EST 2007
· Physical Review. D, Particles Fields
·
OSTI ID:22279936
Aspects of scalar field dynamics in Gauss-Bonnet brane worlds
Journal Article
·
Wed Dec 15 00:00:00 EST 2004
· Physical Review. D, Particles Fields
·
OSTI ID:22279936