3 papers
gr-qc2026
A class of decelerating inhomogeneous cosmological models giving rise to accelerating FLRW universes at large scales
Leandro G. Gomes
In this manuscript, we develop a class of inhomogeneous relativistic cosmological models with the following properties: (i) They contain cosmological observers to whom the spatial…
gr-qc2024
Einstein's equations constrained by homogeneous and isotropic expansion: Initial value problems and applications
Leandro G. Gomes, Marcelo A. C. Nogueira, Lucas Ruiz dos Santos
In this manuscript, we put forth a general scheme for defining initial value problems from Einstein's equations of General Relativity constrained by homogeneous and isotropic expan…
gr-qc2024
Spacetimes with homogeneous and isotropic expansion
Leandro G. Gomes
In this short note, we define and characterize all the spacetimes admitting observers to whom the cosmic expansion is homogeneous and isotropic and interpret their Einstein's equat…