Revisiting the confrontation of the energy conditions with supernovae data

Details Revisiting the confrontation of the energy conditions with supernovae data Revisiting the confrontation of the energy conditions with supernovae data

2008-12-03

arxiv.org/abs/0812.0811v2

Astronomy and Relativistic Astrophysics: New Phenomena and New States of Matter in the Universe. Eds. C.A.Z. Vasconcellos, B.E

Astronomy and Astrophysics

Astrophysics

5 pages. To appear in Int. J. Mod. Phys. D. Talk presented at the 3rd International Workshop on Astronomy and Relativistic Ast

Scientific paper

In the standard Friedmann-Lemaitre-Robertson-Walker (FLRW) approach to model the Universe the violation of the so-called energy conditions is related to some important properties of the Universe as, for example, the current and the inflationary accelerating expansion phases. The energy conditions are also necessary in the formulation and proofs of Hawking-Penrose singularity theorems. In two recent articles we have derived bounds from energy conditions and made confrontations of these bounds with supernovae data. Here, we extend these results in following way: first, by using our most recent statistical procedure for calculating new q(z) estimates from the \emph{gold} and \emph{combined} type Ia supernovae samples; second, we use these estimates to obtain a new picture of the energy conditions fulfillment and violation for the recent past ($z\leq 1 $) in the context of the standard cosmology.

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