First-order formalism and dark energy

Details First-order formalism and dark energy First-order formalism and dark energy

2005-12-07

arxiv.org/abs/astro-ph/0512197v1

Phys.Lett.B633:415-419,2006

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures

Scientific paper

10.1016/j.physletb.2005.12.031

This work deals with cosmological models driven by real scalar field, described by standard dynamics in generic spherical, flat, and hyperbolic geometries. We introduce a first-order formalism, which shows how to relate the potential that specifies the scalar field model to Hubble's parameter in a simple and direct manner. Extensions to tachyonic dynamics, and to two or more real scalar fields are also presented.

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