4 papers
Bispectrum from five-dimensional inflation
Ignatios Antoniadis, Auttakit Chatrabhuti, Jules Cunat +1
It was proposed that five-dimensional (5D) inflation can blow up the size of a compact dimension from the 5D Planck length to the micron size, as required by the dark dimension pro…
Bispectrum at NLO in single field inflation: conservation and squeezed limit
Ignatios Antoniadis, Auttakit Chatrabhuti, Jules Cunat +1
In a recent paper, we computed the bispectrum of primordial density perturbations in CMB to second order in the slow-roll parameters of single field inflation, and found logarithmi…
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…
Thin-wall vacuum decay in the presence of a compact dimension meets the and tensions
Luis A. Anchordoqui, Ignatios Antoniadis, Daniele Bielli +2
The proposal of a rapid sign-switching cosmological constant in the late universe, mirroring a transition from anti-de Sitter (AdS) to de Sitter (dS) space, has significantly impro…