Speaker
Marco San Martín
Description
From a modified General Relativity model named Delta Gravity (DG), that is based on a new Einstein-Hilbert action based on a new symmetry symbolized as $\tilde{\delta}$, we found two equations with the same structure as the Friedmann Equations. These equations let us establish a relation between the two free parameters of the DG theory, and the ``Dark Energy'' density, and we can conclude that one of these parameters, $L_2$, is strictly causing the Accelerating Expansion of the Universe.
These equivalent Friedmann Equations are obtained with a rearrangement of the (DG) motion equations. In this way, a new energy density appears naturally and it can be associated to Dark Energy in the $\Lambda$CDM model.
| arXiv | https://arxiv.org/pdf/1704.02888.pdf |
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Authors
Marco San Martín
Joaquin Sureda Hernandez
(Pontificia Universidad Catolica de Chile)
Prof.
Jorge Alfaro
(PUC, Chile)
