Energy conditions bounds and supernovae data

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.

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

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Cited by in corpus (12)

• Kinematic Constraints to the Transition Redshift from SNe Ia Union Data
• Energy conditions bounds on f(T) gravity
• A Completely Regular Quantum Stress Tensor with $w<-1$
• Gödel-type universes in Palatini f(R) gravity
• Reconstructing the History of Energy Condition Violation from Observational Data
• Cosmological model with time varying deceleration parameter in $F(R,G)$ gravity
• Fitting cosmological data to the function $q(z)$ from GR Theory: Modified Chaplygin Gas
• Cosmological constant constraints from observation-derived energy condition bounds and their application to bimetric massive gravity
• NEC violation in $f(\bar{R},\bar{T})$ gravity in the context of a non-canonical theory via modified Raychaudhuri equation
• Reconstruction of energy conditions from observations and implications for extended theories of gravity
• Cosmological Equation of State and Interacting Energies
• Energy conditions and entropy density of the universe