Energy conditions bounds and supernovae data

Details Energy conditions bounds and supernovae data Energy conditions bounds and supernovae data

2008-08-18

arxiv.org/abs/0808.2467v1

Phys.Lett. B668 (2008) 83

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure. To appear in Phys. Lett. B (2008)

Scientific paper

10.1016/j.physletb.2008.08.029

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.

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