Power-law expansion and Higgs-type potential in a scalar-tensor model
Departamento de Fisica, Universidad del Valle - A.A. 25360, Cali, Colombia
Received: 20 September 2013
Accepted: 3 January 2014
In the scalar-tensor model with Gauss-Bonnet and kinetic couplings, the power-law dark-energy solution may be described by a Higgs-type potential. It was found that in the solution describing the early time epoch of matter dominance, the potential presents a symmetry breaking phase, and the power-law solution leading to accelerated expansion corresponds to a Higgs-type potential in its symmetric shape.
PACS: 98.80.-k – Cosmology / 95.36.+x – Dark energy / 04.50.Kd – Modified theories of gravity
© EPLA, 2014