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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Quintessential inflation in Palatini f(R) gravity
AU - Dimopoulos, Konstantinos
AU - Sanchez Lopez, Samuel
N1 - © 2021 American Physical Society
PY - 2021/2/15
Y1 - 2021/2/15
N2 - We investigate in detail a family of quintessential inflation models in the context of R+R^2 Palatini modified gravity. We find that successful inflation and quintessence are obtained with an inflaton scalar potential that is approximately quadratic in inflation and inverse quartic in quintessence. We show that corrections for the kination period due to Palatini modified gravity are subdominant, while the setup does not challenge constraints on modified gravity from Solar System observations and microscopic experiments, in contrast to the metric case. We obtain concrete predictions regarding primordial tensors to be probed in the near future.
AB - We investigate in detail a family of quintessential inflation models in the context of R+R^2 Palatini modified gravity. We find that successful inflation and quintessence are obtained with an inflaton scalar potential that is approximately quadratic in inflation and inverse quartic in quintessence. We show that corrections for the kination period due to Palatini modified gravity are subdominant, while the setup does not challenge constraints on modified gravity from Solar System observations and microscopic experiments, in contrast to the metric case. We obtain concrete predictions regarding primordial tensors to be probed in the near future.
KW - Palatini formalism
KW - Quintessential Inflation
KW - modified gravity
U2 - 10.1103/PhysRevD.103.043533
DO - 10.1103/PhysRevD.103.043533
M3 - Journal article
VL - 103
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 4
M1 - 043533
ER -