TY - JOUR
T1 - Spectral indices in Eddington-inspired Born-Infeld inflation
AU - Cho, Inyong
AU - Gong, Jinn Ouk
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/9/25
Y1 - 2015/9/25
N2 - We investigate the scalar and tensor spectral indices of the quadratic inflation model in Eddington-inspired Born-Infeld (EiBI) gravity. We find that the EiBI corrections to the spectral indices are of second and first order in the slow-roll approximation for the scalar and tensor perturbations, respectively. This is very promising since the quadratic inflation model in general relativity provides a very nice fit for the spectral indices. Together with the suppression of the tensor-to-scalar ratio, EiBI inflation is agrees well with the observational data.
AB - We investigate the scalar and tensor spectral indices of the quadratic inflation model in Eddington-inspired Born-Infeld (EiBI) gravity. We find that the EiBI corrections to the spectral indices are of second and first order in the slow-roll approximation for the scalar and tensor perturbations, respectively. This is very promising since the quadratic inflation model in general relativity provides a very nice fit for the spectral indices. Together with the suppression of the tensor-to-scalar ratio, EiBI inflation is agrees well with the observational data.
UR - http://www.scopus.com/inward/record.url?scp=84943638488&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.92.064046
DO - 10.1103/PhysRevD.92.064046
M3 - Article
AN - SCOPUS:84943638488
SN - 1550-7998
VL - 92
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 6
M1 - 064046
ER -