Speaker
Mauro Carfora
Description
Abstract:
We illustrate a non-perturbative technique that allows the standard Friedmann-Lemaitre-Robertson-Walker (FLRW) observer to evaluate a measurable, scale-dependent distance functional between her idealized FLRW past light cone and the actual physical past light cone. This distance functional quantifies the FLRW symmetry-breaking in regions of spacetime where structure formation dominates the cosmological landscape. From the point of view of the FLRW observer, gathering data from sources at cosmological redshift z, this functional generates a scale-dependent contribution that strongly erodes the interpretation of the FLRW cosmological constant as representing dark energy.