Nov 26 – 30, 2018
America/Lima timezone
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Equivalent Friedmann Equations in Delta Gravity and a possible explanation to Dark Energy

Nov 29, 2018, 4:00 PM
Room N101, McGregor Building (PUCP)

Room N101, McGregor Building


Parallel Talk (Theory) Cosmology Parallel Talks B


Marco San Martín


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.


Primary authors

Marco San Martín Joaquin Sureda Hernandez (Pontificia Universidad Catolica de Chile) Prof. Jorge Alfaro (PUC, Chile)

Presentation materials