Energy conditions bounds and supernovae data

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 re...

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Bibliographic Details
Published inPhysics letters. B Vol. 668; no. 2; pp. 83 - 86
Main Authors Lima, M.P., Vitenti, S.D.P., Rebouças, M.J.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 02.10.2008
Elsevier Science
Subjects
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
98.80.Jk
98.80.Es
98.80.-k
Supernovae
Violations
Statistical analysis
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Summary: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.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2008.08.029