57 citations · 199 across the 8 of their papers we have counts for
6 papers · 1 filter
Gauss-Bonnet-coupled Quintessential Inflation
Carsten van de Bruck, Konstantinos Dimopoulos, Chris Longden +1
We study in detail a new model of quintessential inflation where the inflaton field is coupled to the Gauss-Bonnet term. This coupling ensures that the variation of the field is ke…
Non-standard hierarchies of the runnings of the spectral index in inflation
Chris Longden
Recent analyses of cosmic microwave background surveys have revealed hints that there may be a non-trivial running of the running of the spectral index. If future experiments were…
Non-Gaussianity in multi-sound-speed disformally coupled inflation
Carsten van de Bruck, Tomi Koivisto, Chris Longden
Most, if not all, scalar-tensor theories are equivalent to General Relativity with a disformally coupled matter sector. In extra-dimensional theories such a coupling can be underst…
Running of the Running and Entropy Perturbations During Inflation
Carsten van de Bruck, Chris Longden
In single field slow-roll inflation, one expects that the spectral index is first order in slow-roll parameters. Similarly, its running and the runni…
Reheating in Gauss-Bonnet-coupled inflation
Carsten van de Bruck, Konstantinos Dimopoulos, Chris Longden
We investigate the feasibility of models of inflation with a large Gauss-Bonnet coupling at late times, which have been shown to modify and prevent the end of inflation. Despite th…
Disformally coupled inflation
Carsten van de Bruck, Tomi Koivisto, Chris Longden
A disformal coupling between two scalar fields is considered in the context of cosmological inflation. The coupling introduces novel derivative interactions mixing the kinetic term…