135 citations · 402 across the 8 of their papers we have counts for
8 papers
Quintessential inflation with a trap and axionic dark matter
Konstantinos Dimopoulos, Mindaugas Karčiauskas, Charlotte Owen
We study a new model of quintessential inflation which is inspired by supergravity and string theory. The model features a kinetic pole, which gives rise to the inflationary platea…
Primordial Black Hole Formation During Slow Reheating After Inflation
Bernard Carr, Konstantinos Dimopoulos, Charlotte Owen +1
We study the formation of primordial black holes (PBHs) in the early Universe during a period of slow reheating after inflation. We demonstrate how the PBH formation mechanism may…
Instant Preheating in Quintessential Inflation with -Attractors
Konstantinos Dimopoulos, Leonora Donaldson Wood, Charlotte Owen
We investigate a compelling model of quintessential inflation in the context of -attractors, which naturally result in a scalar potential featuring two flat regions, the inflati…
Gauss-Bonnet-coupled Quintessential Inflation
Carsten van de Bruck, Konstantinos Dimopoulos, Chris Longden +1
We study in detail a new model of quintessential inflation where the inflaton field is coupled to the Gauss-Bonnet term. This coupling ensures that the variation of the field is ke…
Loop inflection-point inflation
Konstantinos Dimopoulos, Charlotte Owen, Antonio Racioppi
A novel inflection-point inflation model is analysed. The model considers a massless scalar field, whose self-coupling's running is stabilised by a non-renormalisable operator. The…
Quintessential Inflation with -attractors
Konstantinos Dimopoulos, Charlotte Owen
A novel approach to quintessential inflation model building is studied, within the framework of -attractors, motivated by supergravity theories. Inflationary observables are in…
Modelling Inflation with a Power-law Approach to the Inflationary Plateau
Konstantinos Dimopoulos, Charlotte Owen
A new family of inflationary models is introduced and analysed. The behaviour of the parameters characterising the models suggest preferred values, which generate the most interest…
How Thermal Inflation can save Minimal Hybrid Inflation in Supergravity
Konstantinos Dimopoulos, Charlotte Owen
Minimal hybrid inflation in supergravity has been ruled out by the 2015 Planck observations because the spectral index of the produced curvature perturbation falls outside observat…