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gr-qc2023
Nonsingular collapse of a spherical dust cloud
Asier Alonso-Bardaji, David Brizuela
We provide a covariant framework to study singularity-free Lemaître-Tolman-Bondi spacetimes with effective corrections motivated by loop quantum gravity. We show that, as in genera…
gr-qc2023★ 5 cited
Gravitational wave oscillations in bimetric cosmology
David Brizuela, Marco de Cesare, Araceli Soler Oficial
Unlike general relativity, in bimetric gravity linear gravitational waves do not evolve as free fields. In this theory there are two types of tensor perturbations, whose interactio…