TY - JOUR

T1 - Toward a Unified Description of Dark Energy and Dark Matter from the Abnormally Weighting Energy Hypothesis

AU - Fuzfa, A.

AU - -M. Alimi, J.

N1 - 17 pages, 13 figures; version 3: one references added, matches version published in Phys. Rev. D

PY - 2007/2/19

Y1 - 2007/2/19

N2 - The Abnormally Weighting Energy (AWE) hypothesis consists of assuming that the dark sector of cosmology violates the weak equivalence principle (WEP) on cosmological scales, which implies a violation of the strong equivalence principle for ordinary matter. In this paper, dark energy (DE) is shown to result from the violation of WEP by pressureless (dark) matter. This allows us to build a new cosmological framework in which general relativity (GR) is satisfied at low scales, as WEP violation depends on the ratio of the ordinary matter over dark matter densities, but at large scales, we obtain a general relativity-like theory with a different value of the gravitational coupling. This explanation is formulated in terms of a tensor-scalar theory of gravitation without WEP for which there exists a revisited convergence mechanism toward GR. The consequent DE mechanism build upon the anomalous gravity of dark matter (i) does not require any violation of the strong energy condition $p

AB - The Abnormally Weighting Energy (AWE) hypothesis consists of assuming that the dark sector of cosmology violates the weak equivalence principle (WEP) on cosmological scales, which implies a violation of the strong equivalence principle for ordinary matter. In this paper, dark energy (DE) is shown to result from the violation of WEP by pressureless (dark) matter. This allows us to build a new cosmological framework in which general relativity (GR) is satisfied at low scales, as WEP violation depends on the ratio of the ordinary matter over dark matter densities, but at large scales, we obtain a general relativity-like theory with a different value of the gravitational coupling. This explanation is formulated in terms of a tensor-scalar theory of gravitation without WEP for which there exists a revisited convergence mechanism toward GR. The consequent DE mechanism build upon the anomalous gravity of dark matter (i) does not require any violation of the strong energy condition $p

U2 - 10.1103/PhysRevD.75.123007

DO - 10.1103/PhysRevD.75.123007

M3 - Article

SN - 1550-7998

VL - 75

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

M1 - 123007

ER -