106 citations · 168 across the 4 of their papers we have counts for
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gr-qc2019
Single-field inflation in models with an term
Ignatios Antoniadis, Alexandros Karam, Angelos Lykkas +2
We present two cases where the addition of the term to an inflationary model leads to single-field inflation instead of two-field inflation as is usually the case. In both ca…
gr-qc2019
Frame-dependence of inflationary observables in scalar-tensor gravity
Alexandros Karam, Thomas Pappas, Kyriakos Tamvakis
By means of the Green's function method, we computed the spectral indices up to third order in the slow-roll approximation for a general scalar-tensor theory in both the Einstein a…