76 citations · 158 across the 4 of their papers we have counts for
4 papers
The Maximal Amount of Gravitational Waves in the Curvaton Scenario
N. Bartolo, S. Matarrese, A. Riotto +1
The curvaton scenario for the generation of the cosmological curvature perturbation on large scales represents an alternative to the standard slow-roll scenario of inflation in whi…
Comment on non-Gaussianity in hybrid inflation
Antti Vaihkonen
In the literature there have been incompatible estimates for the amount of non-Gaussianity in hybrid inflation. In this note we point out the sources for the discrepancies and show…
Cosmological constraints on string scale and coupling arising from tachyonic instability
Kari Enqvist, Asko Jokinen, Anupam Mazumdar +2
We demonstrate that string motivated inflation ending via tachyonic instability leaves a detectable imprint on the cosmic microwave background (CMB) radiation by virtue of the exci…
Non-Gaussian perturbations in hybrid inflation
Kari Enqvist, Antti Vaihkonen
We consider second order inflationary perturbations in the case of two scalar fields, and the inflaton . We derive an expression for the non-Gaussianity of perturbations and…