1.2k citations · 11.4k across the 215 of their papers we have counts for
4 papers · 1 filter
The role of topologigal defects in cosmology
Mairi Sakellariadou
Topological defects are involved in a plethora of physical and astrophysical phenomena. In these lectures, I will review the r\^ ole they could play in the large-scale structure fo…
Graviton production from extra dimensions
Kerstin E. Kunze, Mairi Sakellariadou
Graviton production due to collapsing extra dimensions is studied. The momenta lying in the extra dimensions are taken into account. A -dimensional background is matched to an e…
Non-vacuum initial states for the cosmological perturbations and the back-reaction problem of inflation
Alejandro Gangui, Jerome Martin, Mairi Sakellariadou
In the framework of Inflationary theory, the assumption that the quantum state of the perturbations is a non-vacuum state leads to a difficulty: non-vacuum initial states imply, in…
Inflation and non--Gaussianity
Alejandro Gangui, Jerome Martin, Mairi Sakellariadou
We study non-Gaussian signatures on the cosmic microwave background (CMB) radiation predicted within inflationary models with non-vacuum initial states for cosmological perturbatio…