The effect of curvature in thawing models

Sergio del Campo; Víctor H. Cárdenas; Ramón Herrera

doi:10.1016/j.physletb.2010.10.009

The effect of curvature in thawing models

Sergio del Campo, Víctor H. Cárdenas, Ramón Herrera

INSTITUTE OF PHYSICS

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7 Scopus citations

Abstract

We study the evolution of spatial curvature for thawing class of dark energy models. We examine the evolution of the equation of state parameter, w_ø, as a function of the scale factor a, for the case in which the scalar field ø evolve in nearly flat scalar potential. We show that all such models provide the corresponding approximate analytical expressions for w_ø(Ω_ø,Ω_k) and w_ø(a). We present observational constraints on these models.

Original language	English
Pages (from-to)	279-283
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	694
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2010.10.009
State	Published - 3 Jan 2011

Keywords

Cosmic acceleration
Dark energy
Thawing models

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10.1016/j.physletb.2010.10.009

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title = "The effect of curvature in thawing models",

abstract = "We study the evolution of spatial curvature for thawing class of dark energy models. We examine the evolution of the equation of state parameter, w{\o}, as a function of the scale factor a, for the case in which the scalar field {\o} evolve in nearly flat scalar potential. We show that all such models provide the corresponding approximate analytical expressions for w{\o}(Ω{\o},Ωk) and w{\o}(a). We present observational constraints on these models.",

keywords = "Cosmic acceleration, Dark energy, Thawing models",

author = "{del Campo}, Sergio and C{\'a}rdenas, {V{\'i}ctor H.} and Ram{\'o}n Herrera",

year = "2011",

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T1 - The effect of curvature in thawing models

AU - del Campo, Sergio

AU - Cárdenas, Víctor H.

AU - Herrera, Ramón

PY - 2011/1/3

Y1 - 2011/1/3

N2 - We study the evolution of spatial curvature for thawing class of dark energy models. We examine the evolution of the equation of state parameter, wø, as a function of the scale factor a, for the case in which the scalar field ø evolve in nearly flat scalar potential. We show that all such models provide the corresponding approximate analytical expressions for wø(Ωø,Ωk) and wø(a). We present observational constraints on these models.

AB - We study the evolution of spatial curvature for thawing class of dark energy models. We examine the evolution of the equation of state parameter, wø, as a function of the scale factor a, for the case in which the scalar field ø evolve in nearly flat scalar potential. We show that all such models provide the corresponding approximate analytical expressions for wø(Ωø,Ωk) and wø(a). We present observational constraints on these models.

KW - Cosmic acceleration

KW - Dark energy

KW - Thawing models

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DO - 10.1016/j.physletb.2010.10.009

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SN - 0370-2693

VL - 694

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4-5

ER -

The effect of curvature in thawing models

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Keywords

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