53 citations · 94 across the 4 of their papers we have counts for
5 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…
Reheating in runaway inflation models via the evaporation of mini primordial black holes
Ioannis Dalianis, George P. Kodaxis
We investigate the cosmology of mini Primordial Black Holes (PBHs) produced by large density perturbations that collapse during a stiff fluid domination phase. Such a phase can be…
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…
A simple deformation of Starobinsky inflationary model
Dhimiter D. Canko, Ioannis D. Gialamas, George P. Kodaxis
We study a model including a real scalar field non-minimally coupled to gravity, which is conformally equivalent to an Einstein-Hilbert theory, involving two real…
Emitter and absorber assembly for multiple self-dual operation and directional transparency
P. A. Kalozoumis, C. V. Morfonios, G. Kodaxis +2
A recursive scheme for the design of scatterers acting simultaneously as emitters and absorbers, such as lasers and coherent perfect absorbers in optics, at multiple prescribed fre…