Speaker
Javier de Cruz Pérez
(Universidad de Córdoba)
Description
The symmetry group of general relativity is the group of diffeomorphisms (Diff), which means that the form of the physical equations remains invariant under general coordinate transformations. We discuss the cosmological implications of breaking the Diff invariance down to transverse diffeomorphisms (TDiff) invariance in the matter sector. We show that even simple cases, like a minimally coupled TDiff scalar theory with purely kinetic terms, represent an interesting alternative to the LCDM and provide new ways to deal with the cosmological tensions.
Author
Javier de Cruz Pérez
(Universidad de Córdoba)
