Volume 95, Number 3, August 2011
|Number of page(s)||6|
|Section||Geophysics, Astronomy and Astrophysics|
|Published online||11 July 2011|
Quintessence ghost dark energy model
Department of Physics, Shahid Bahonar University - P.O. Box 76175, Kerman, Iran
2 Research Institute for Astronomy and Astrophysics of Maragha (RIAAM) - Maragha, Iran
Accepted: 14 June 2011
A so-called “ghost dark energy” was recently proposed to explain the present acceleration of the universe expansion. The energy density of ghost dark energy, which originates from the Veneziano ghost of QCD, is proportional to the Hubble parameter, ρD=αH, where α is a constant which is related to the QCD mass scale. In this paper, we establish the correspondence between ghost dark energy and quintessence scalar-field energy density. This connection allows us to reconstruct the potential and the dynamics of the quintessence scalar-field according to the evolution of ghost energy density.
PACS: 98.80.Es – Observational cosmology (including Hubble constant, distance scale, cosmological constant, early Universe, etc) / 98.80.Cq – Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)
© EPLA, 2011
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