Cosmological acceleration in delta-gravity

We review a model of the gravitational field described by two symmetric tensors. Gravity is affected by the new field, but outside matter, when Tμν = 0, the predictions of the model coincide exactly with general relativity(GR), so all classical tests are satisfied. We find that massive particles do...

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Main Authors: Alfaro, Jorge, González, Pablo
Format: Conference Proceeding
Language:English
Subjects:
Dark energy
Gravitation
Gravitational fields
Relativity
Tensors
Universe
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González, Pablo
description We review a model of the gravitational field described by two symmetric tensors. Gravity is affected by the new field, but outside matter, when Tμν = 0, the predictions of the model coincide exactly with general relativity(GR), so all classical tests are satisfied. We find that massive particles do not follow a geodesic while massless particles trajectories are null geodesies of an effective metric. In particular we study the Cosmological case, where we get an accelerated expansion of the universe without dark energy.
doi_str_mv 10.1063/1.4913343
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source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
subjects Dark energy
Gravitation
Gravitational fields
Relativity
Tensors
Universe
title Cosmological acceleration in delta-gravity
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