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gr-qc2022★ 62 cited
Inflation in Metric-Affine Quadratic Gravity
Ioannis D. Gialamas, Kyriakos Tamvakis
In the general framework of Metric-Affine theories of gravity, where the metric and the connection are independent variables, we consider actions quadratic in the Ricci scalar curv…
gr-qc2022★ 11 cited
Late time acceleration in Palatini gravity
Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis
We investigate the effect of the quadratic correction and non-minimal coupling on a quintessence model with an exponential potential in the Pa…
hep-ph2022
Addendum to "Ultraviolet behaviour of Higgs inflation models"
Ignatios Antoniadis, Anthony Guillen, Kyriakos Tamvakis
This article is an addendum to [1]. We extend our computation of the on-shell scattering amplitudes in an arbitrary inflaton background . Although the effective Einstein f…