90 citations · 219 across the 6 of their papers we have counts for
6 papers
Dark energy and decompactification in string gas cosmology
Francesc Ferrer, Syksy Rasanen
We study the stability of extra dimensions in string gas cosmology at late times. Vacuum energy and, interestingly, baryons lead to decompactification after they become dynamically…
Constraints on backreaction in dust universes
Syksy Rasanen
We study backreaction in dust universes using exact equations which do not rely on perturbation theory, concentrating on theoretical and observational constraints. In particular, w…
Backreaction of linear perturbations and dark energy
Syksy Rasanen
A simple discussion on the backreaction of inhomogeneities in cosmology, focusing on the possibility that it could explain the present acceleration and solve the coincidence proble…
Correlated isocurvature perturbations from mixed inflaton-curvaton decay
Francesc Ferrer, Syksy Rasanen, Jussi Valiviita
We study cosmological perturbations in the case that present-day matter consists of a mixture of inflaton and curvaton decay products. We calculate how the curvaton perturbations a…
Photon Physics in Heavy Ion Collisions at the LHC
F. Arleo, P. Aurenche, F. Bopp +32
Various pion and photon production mechanisms in high-energy nuclear collisions at RHIC and LHC are discussed. Comparison with RHIC data is done whenever possible. The prospect of…
A primer on the ekpyrotic scenario
Syksy Rasanen
This is an introduction to the ekpyrotic scenario, with an emphasis on the two contexts of brane cosmology and primordial universe scenarios. A self-contained introduction to brane…