5 papers
On the Reliability of the Langevin Pertubative Solution in Stochastic Inflation
Jerome Martin, Marcello Musso
A method to estimate the reliability of a perturbative expansion of the stochastic inflationary Langevin equation is presented and discussed. The method is applied to various infla…
Solving Stochastic Inflation for Arbitrary Potentials
Jerome Martin, Marcello Musso
A perturbative method for solving the Langevin equation of inflationary cosmology in presence of backreaction is presented. In the Gaussian approximation, the method permits an exp…
Stochastic Quintessence
Jerome Martin, Marcello A. Musso
The behavior of the quintessence field is studied during inflation. In order to have a satisfactory model of dark energy, the quintessence field value today should be as insensible…
Stochastic Inflation and the Lower Multipoles in the CMB Anisotropies
M. Liguori, S. Matarrese, M. Musso +1
We generalize the treatment of inflationary perturbations to deal with the non-Markovian colored noise emerging from any realistic approach to stochastic inflation. We provide a ca…
Influence of Super-Horizon Scales on Cosmological Observables Generated during Inflation
Sabino Matarrese, Marcello A. Musso, Antonio Riotto
Using the techniques of out-of-equilibrium field theory, we study the influence on the properties of cosmological perturbations generated during inflation on observable scales comi…