4 papers
The silent dark sector: a field-theory approach to unified dark fluids with vanishing speed of sound
Javier de Cruz Pérez, Darío Jaramillo-Garrido, Antonio L. Maroto +1
We introduce a novel class of field-theory models that provide a unified description of the dark sector as a single perfect fluid with vanishing sound speed. These models also admi…
Cosmological properties of black-hole hair in the linearly coupled scalar-Gauss-Bonnet theory
Dražen Glavan, Darío Jaramillo-Garrido
We investigate the superhorizon behavior of scalar hair sourced by black holes in de Sitter spacetime in the linearly coupled shift-symmetric scalar-Gauss-Bonnet theory. Working in…
K-nonizing
Jose Beltrán Jiménez, Teodor Borislavov Vasilev, Darío Jaramillo-Garrido +2
We unveil the dynamical equivalence of field theories with non-canonical kinetic terms and canonical theories with a volume element invariant under transverse diffeomorphisms. The…
Symmetry restoration for TDiff scalar fields
Darío Jaramillo-Garrido, Antonio L. Maroto, Prado Martín-Moruno
We explore the idea of restoring the full diffeomorphism (Diff) invariance in theories with only transverse diffeomorphisms (TDiff) by the introduction of additional fields. In par…