3 papers
gr-qc2026
Cosmological perturbations of TDiff fields
Antonio L. Maroto, Prado Martín-Moruno, Diego Tessainer
We study scalar field theories that break diffeomorphism invariance down to the subgroup of transverse diffeomorphisms through the matter sector in cosmological backgrounds. We foc…
gr-qc2025
Multifield theories invariant under transverse diffeomorphisms: The mixed regime case
Antonio L. Maroto, Prado Martín-Moruno, Diego Tessainer
We study theories breaking diffeomorphism (Diff) invariance down to the subgroup of transverse diffeomorphisms (TDiff), consisting of multiple scalar fields in a cosmological backg…
gr-qc2024
Multi-field TDiff theories for cosmology
Diego Tessainer, Antonio L. Maroto, Prado Martín-Moruno
We consider theories which break the invariance under diffeomorphisms (Diff) down to transverse diffeomorphisms (TDiff) in the matter sector, consisting of multiple scalar fields.…