TY - JOUR
T1 - Revisiting f(R) gravity's rainbow
T2 - Inflation and primordial fluctuations
AU - Leyva, Yoelsy
AU - Otalora, Giovanni
N1 - Publisher Copyright:
© 2023 IOP Publishing Ltd and Sissa Medialab.
PY - 2023/4/1
Y1 - 2023/4/1
N2 - We study inflation and the generation of primordial fluctuations in f(R) gravity's rainbow. We calculate the cosmological perturbations and then the scalar and tensor primordial power spectrum. We contrast the predictions of the model with the current observational data from PLANCK and BICEP/Keck. Particularly, we found new results for the scalar spectral index ns and the tensor-to-scalar ratio r along with new observational constraints on the rainbow functions.
AB - We study inflation and the generation of primordial fluctuations in f(R) gravity's rainbow. We calculate the cosmological perturbations and then the scalar and tensor primordial power spectrum. We contrast the predictions of the model with the current observational data from PLANCK and BICEP/Keck. Particularly, we found new results for the scalar spectral index ns and the tensor-to-scalar ratio r along with new observational constraints on the rainbow functions.
KW - cosmological perturbation theory
KW - inflation
KW - modified gravity
KW - physics of the early universe
UR - https://www.scopus.com/pages/publications/85152896384
U2 - 10.1088/1475-7516/2023/04/030
DO - 10.1088/1475-7516/2023/04/030
M3 - Article
AN - SCOPUS:85152896384
SN - 1475-7516
VL - 2023
JO - Journal of Cosmology and Astroparticle Physics
JF - Journal of Cosmology and Astroparticle Physics
IS - 4
M1 - 030
ER -