The Abnormally Weighting Energy Hypothesis: The origin of the cosmic acceleration

TL;DR

This paper proposes a modified tensor-scalar gravity theory where an abnormal energy component causes natural cosmic acceleration through a gravitational feedback mechanism, relaxing the weak equivalence principle for invisible matter.

Contribution

It introduces an abnormally weighting energy concept in tensor-scalar theories, providing a novel explanation for cosmic acceleration without dark energy.

Findings

Cosmic acceleration arises naturally from the theory.

The model suggests a symmetry between visible and invisible matter sectors.

The convergence to general relativity is altered by the new energy component.

Abstract

We generalize tensor-scalar theories of gravitation by the introduction of an abnormally weighting type of energy. This theory of tensor-scalar anomalous gravity is based on a relaxation of the weak equivalence principle that is now restricted to ordinary visible matter only. As a consequence, the convergence mechanism toward general relativity is modified and produces naturally cosmic acceleration as an inescapable gravitational feedback induced by the mass-variation of some invisible sector. The cosmological implications of this new theoretical framework are studied. This glimpses at an enticing new symmetry between the visible and invisible sectors, namely that the scalar charges of visible and invisible matter are exactly opposite.