Speaker
Adrià Delhom I Latorre
(University of Valencia)
Description
In this talk we will review the known result that the background evolution of standard LQC can be reproduced by a covariant metric-affine f(R) theory all the way up to bounce curvatures. We will then show that other Loop Cosmologies dubbed as mLQC-I and mLQC-II, differing on standard LQC due to quantisation ambiguities related to the Lorentzian term of the Hamiltonian, also admit covariant metric-affine Lagrangians of the f(R) class reproducing the background evolutions can also be found. Remarkably, the Lagrangians reproducing LQC, mLQC-I and mLQC-II can be embedded into a three-parameter family of f(R) theories, where two parameters are fixed by initial conditions at the bounce.
Primary authors
Adrià Delhom I Latorre
(University of Valencia)
Gonzalo J. Olmo
(University of Valencia)
Prof.
Parampreet Singh
(Louisiana State University)
