17 papers
Distance-Higuchi Bounds on Inflationary Field Ranges and Lifetimes
Luis A. Anchordoqui, Ignatios Antoniadis, Alek Bedroya
We show that quasi-de Sitter inflation driven by a nearly flat scalar potential has a finite polynomial lifespan dictated by the interplay between the swampland Distance Conjecture…
TransPlanckian Censorship on Dark Dimension Inflation
Luis A. Anchordoqui, Ignatios Antoniadis, Jules Cunat
It was proposed that extra dimensions can acquire large size by higher dimensional inflation connecting two large hierarchies in particle physics and cosmology, namely the weakness…
Reheating in No-Scale Models of Inflation
Ignatios Antoniadis, John Ellis, Dimitri V. Nanopoulos +2
Analogously to the suppression of inflaton decays into conformally-coupled scalar fields in the original Starobinsky model of inflation, inflaton decays to Standard Model…
Cosmological history after higher dimensional inflation
Luis A. Anchordoqui, Ignatios Antoniadis, Jules Cunat
It was proposed that extra dimensions can acquire large size by higher dimensional inflation connecting two large hierarchies in particle physics and cosmology, namely the weakness…
New leading contributions to non-gaussianity in single field inflation
Ignatios Antoniadis, Auttakit Chatrabhuti, Jules Cunat +1
We compute the bispectrum of primordial density perturbations in CMB to second order in the slow-roll parameters of single field inflation. We correct previous results and found th…
Mode interactions in scalar field cosmology
Spiros Cotsakis, Ignatios Antoniadis
We study the dynamics of spatially homogeneous Friedmann--Robertson--Walker universes filled with a massive scalar field in a neighbourhood of the massless transition . At thi…