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δ Gravity: Dark Sector, Post-Newtonian Limit and Schwarzschild Solution

1,*,† and 2,†
Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Macul, Santiago 7810000, Chile
Sede Esmeralda, Universidad de Tarapacá, Avda. Luis Emilio Recabarren 2477, Iquique 1130000, Chile
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Universe 2019, 5(5), 96;
Received: 17 March 2019 / Revised: 17 April 2019 / Accepted: 20 April 2019 / Published: 26 April 2019
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We present a new kind of model, which we call δ Theories, where standard theories are modified including new fields, motivated by an additional symmetry ( δ symmetry). In previous works, we proved that δ Theories just live at one loop, so the model in a quantum level can be interesting. In the gravitational case, we have δ Gravity, based on two symmetric tensors, g μ ν and g ˜ μ ν , where quantum corrections can be controlled. In this paper, a review of the classical limit of δ Gravity in a Cosmological level will be developed, where we explain the accelerated expansion of the universe without Dark Energy and the rotation velocity of galaxies by the Dark Matter effect. Additionally, we will introduce other phenomenon with δ Gravity like the deflection of the light produced by the sun, the perihelion precession, Black Holes and the Cosmological Inflation. View Full-Text
Keywords: modified gravity; dark energy; dark matter; general relativity modified gravity; dark energy; dark matter; general relativity

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Alfaro, J.; González, P. δ Gravity: Dark Sector, Post-Newtonian Limit and Schwarzschild Solution. Universe 2019, 5, 96.

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