Dark Energy Cosmology with a Rarita-Schwinger Field

Details Dark Energy Cosmology with a Rarita-Schwinger Field Dark Energy Cosmology with a Rarita-Schwinger Field

Apr 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ijtp...45..813s&link_type=abstract

International Journal of Theoretical Physics, Volume 45, Issue 4, pp.813-819

Physics

2

Cosmology, Dark Energy, Rarita&Ndash, Schwinger Field

Scientific paper

Recent observations of the Cosmic Microwave Background, Supernovae and Sloan Digital Sky Survey (SDSS) show that our universe has a critical energy density, and roughly 2/3 of it is dark energy, which drives the accelerating expansion of the cosmos. In view of the astrophysical data, we find that the equation of state parameter of the dark energy lies in a narrow range around w = -1. In this paper, we construct a cosmology model with a Rarita-Schwinger field to realize the equation of state parameter w < -1 or w > -1 and discuss its stability.

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