106 citations · 317 across the 7 of their papers we have counts for
4 papers · 1 filter
Properties of oscillons in hilltop potentials: energies, shapes, and lifetimes
Stefan Antusch, Francesco Cefala, Francisco Torrenti
Oscillons are spatially localised strong fluctuations of a scalar field. They can e.g. form after inflation when the scalar field potential is shallower than quadratic away from th…
Parametric resonance after hilltop inflation caused by an inhomogeneous inflaton field
Stefan Antusch, Francesco Cefala, David Nolde +1
We study preheating after hilltop inflation where the inflaton couples to another scalar field, e.g. a right-handed sneutrino, which provides a mechanism for generating the correct…
False vacuum energy dominated inflation with large and the importance of
Stefan Antusch, Francesco Cefala, David Nolde +1
We investigate to which extent and under which circumstances false vacuum energy () dominated slow-roll inflation is compatible with a large tensor-to-scalar ratio $r = O(0.1)…
SUGRA New Inflation with Heisenberg Symmetry
Stefan Antusch, Francesco Cefala
We propose a realisation of 'new inflation' in supergravity (SUGRA), where the flatness of the inflaton potential is protected by a Heisenberg symmetry. Inflation can be associated…