1.9k citations · 16.3k across the 107 of their papers we have counts for
4 papers · 2 filters
The failure of cosmological perturbation theory in the new ekpyrotic and cyclic ekpyrotic scenarios
D H Lyth
Cosmological perturbation theory fails in the new ekpyrotic and cyclic ekpyrotic scenarios, before the scale factor of the Universe reaches zero. As a result, a recently-proposed r…
Generating the curvature perturbation without an inflaton
David H. Lyth, David Wands
We present a mechanism for the origin of the large-scale curvature perturbation in our Universe by the late decay of a massive scalar field, the curvaton. The curvaton is light dur…
The primordial curvature perturbation in the ekpyrotic Universe
David H. Lyth
In the ekpyrotic scenario the Universe is initially collapsing, the energy density coming from a scalar field with a negative exponential potential. On the basis of a calculation i…
Hybrid Inflation and Baryogenesis at the TeV Scale
Edmund J. Copeland, David Lyth, Arttu Rajantie +1
We consider the construction of inverted hybrid inflation models in which the vacuum energy during inflation is at the TeV scale, and the inflaton couples to the Higgs field. Such…