Is Dark Energy Abnormally Weighting?

Abstract

We present a new interpretation of dark energy in terms of an \textit{Abnormally Weighting Energy} (AWE). This means that dark energy does not couple to gravitation in the same way as ordinary matter, yielding a violation of the weak and strong equivalence principles on cosmological scales. The resulting cosmological mechanism accounts for the Hubble diagram of type Ia supernovae in terms of both cosmic acceleration and variation of the gravitational constant while still accounting for the present tests of general relativity. This explanation allows to build dark energy models (i) without violation of the strong energy condition $p<-\rho c^2/3$ (ii) with non-negligible direct couplings to gravitation and (iii) natural convergence mechanism toward general relativity.

4 pages, 3 figures, to appear in the Proceedings of the SF2A 2006, Paris

References in corpus (5)

• The Supernova Legacy Survey: Measurement of Omega_M, Omega_Lambda and w from the First Year Data Set
• Non-Abelian Born--Infeld cosmology
• Convergence of Scalar-Tensor theories toward General Relativity and Primordial Nucleosynthesis
• Dark Energy as a Born-Infeld Gauge Interaction Violating the Equivalence Principle
• Non-Abelian Einstein-Born-Infeld-Dilaton Cosmology

Cited by in corpus (4)

• P-nflation: generating cosmic Inflation with p-forms
• The Abnormally Weighting Energy Hypothesis: the Missing Link between Dark Matter and Dark Energy
• Scalar perturbations in p-nflation: the 3-form case
• Test of the Equivalence Principle in the Dark Sector on Galactic Scales