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Elsevier, Physics Letters B, 2(668), p. 83-86, 2008

DOI: 10.1016/j.physletb.2008.08.029

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Energy conditions bounds and supernovae data

Journal article published in 2008 by M. P. Lima ORCID, S. D. P. Vitenti ORCID, M. J. Reboucas
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The energy conditions play an important role in the description of some important properties of the Universe, including the current accelerating expansion phase and the possible recent phase of super-acceleration. In a recent work we have provided a detailed study of the energy conditions for the recent past by deriving bounds from energy conditions and by making the confrontation of the bounds with supernovae data. Here, we extend and update these results in two different ways. First, by carrying out a new statistical analysis for $q(z)$ estimates needed for the confrontation between the bounds and supernovae data. Second, by providing a new picture of the energy conditions fulfillment and violation in the light of the recently compiled Union set of 307 type Ia supernovae and by using two different statistical approaches. ; Comment: 4 pages, 1 figure. To appear in Phys. Lett. B (2008)