53 citations · 154 across the 6 of their papers we have counts for
6 papers
The effect of multiple features on the power spectrum in two-field inflation
K. Boutivas, I. Dalianis, G. P. Kodaxis +1
We extend our previous work on the enhancement of the curvature spectrum during inflation to the two-field case. We identify the slow-roll parameter as the quantity that can tr…
Spectrum oscillations from features in the potential of single-field inflation
I. Dalianis, G. P. Kodaxis, I. D. Stamou +2
We study single-field inflationary models with steep step-like features in the potential that lead to the temporary violation of the slow-roll conditions during the evolution of th…
Supersymmetry Breaking and Inflation from Higher Curvature Supergravity
I. Dalianis, F. Farakos, A. Kehagias +2
The generic embedding of the higher curvature theory into old-minimal supergravity leads to models with rich vacuum structure in addition to its well-known inflationary pro…
Exponential potential for an inflaton with nonminimal kinetic coupling and its supergravity embedding
Iannis Dalianis, Fotis Farakos
In the light of the new observational results we discuss the status of the exponential potentials driving inflation. We depart form the minimal scenario and study an inflaton kinet…
Higher Derivative D-term Inflation in New-minimal Supergravity
Iannis Dalianis, Fotis Farakos
We revisit the D-term inflation and amend it with ghost-free higher derivative couplings of chiral superfields to super-curvature. These couplings realize a more generic inflationa…
Gravitino dark matter production at finite temperature
Iannis Dalianis
The production and the final abundance of gravitino dark matter appear to depend crucially on the restoration of the global U(1) -symmetry of GMSB sectors in a threefold way. An…