133 citations · 293 across the 4 of their papers we have counts for
4 papers
On the divergences of inflationary superhorizon perturbations
K. Enqvist, S. Nurmi, D. Podolsky +1
We discuss the infrared divergences that appear to plague cosmological perturbation theory. We show that within the stochastic framework they are regulated by eternal inflation so…
Kahler potentials for the MSSM inflation and the spectral index
Sami Nurmi
Recently it has been argued that some of the fine-tuning problems of the MSSM inflation associated with the existence of a saddle point along a flat direction may be solved natural…
Covariant generalization of cosmological perturbation theory
Kari Enqvist, Janne Hogdahl, Sami Nurmi +1
We present an approach to cosmological perturbations based on a covariant perturbative expansion between two worldlines in the real inhomogeneous universe. As an application, at an…
Non-Gaussianity in Curvaton Models with Nearly Quadratic Potential
Kari Enqvist, Sami Nurmi
We consider curvaton models with potentials that depart slightly from the quadratic form. We show that although such a small departure does not modify significantly the Gaussian pa…