918 citations · 10.5k across the 126 of their papers we have counts for
11 papers · 1 filter
Trans-Planckian Dark Energy?
Martin Lemoine, Jerome Martin, Jean-Philippe Uzan
It has recently been proposed by Mersini et al. 01, Bastero-Gil and Mersini 02 that the dark energy could be attributed to the cosmological properties of a scalar field with a non-…
Quintessence and the accelerating universe
Philippe Brax, Jerome Martin
Observations seem to indicate that our universe is presently accelerating due to the presence of dark energy. Quintessence represents a possible way to model the dark energy. In th…
WKB approximation for inflationary cosmological perturbations
Jerome Martin, Dominik J. Schwarz
A new method for predicting inflationary cosmological perturbations, based on the Wentzel-Kramers-Brillouin (WKB) approximation, is presented. A general expression for the WKB scal…
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…
Comment on "Density perturbations in the ekpyrotic scenario"
Jerome Martin, Patrick Peter, Nelson Pinto-Neto +1
In the paper ``Density perturbations in the ekpyrotic scenario'', it is argued that the expected spectrum of primordial perturbations should be scale invariant in this scenario. He…