We construct a family of simple single-field inflation models consistent with Planck / BICEP Keck bounds which have a parametrically small tensor amplitude and no running of the scalar spectral index. The construction consists of a constant-roll hilltop inflaton potential with the end of inflation left as a free parameter induced by higher-order operators which become dominant late in inflation. This construction directly demonstrates that there is no lower bound on the tensor/scalar ratio for simple single-field inflation models.Comment: 14 pages, 2 figures (V3: Version submitted to JCAP
We quantify the degree of fine tuning required to achieve an observationally viable period of inflat...
If cosmological inflation is due to a slowly rolling single inflation field taking trans-Planckian v...
In this paper my prime objective is to explain the generation of large tensor-to-scalar ratio from t...
In this paper we provide an accurate bound on primordial gravitational waves, i.e. tensor-to-scalar ...
AbstractIn this paper we provide an accurate bound on primordial gravitational waves, i.e. tensor-to...
Inflationary cosmology proposes that the early Universe undergoes accelerated expansion, driven, in ...
We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral moti...
We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral moti...
We investigate all single-field, slow-roll inflationary models whose slow-roll parameters scale as 1...
We investigate all single-field, slow-roll inflationary models whose slow-roll parameters scale as 1...
We study to what extent the spectral index ns and the tensor-to-scalar ratio r determine the field...
We investigate all single-field, slow-roll inflationary models whose slow-roll parameters scale as 1...
In this paper my prime objective is to explain the generation of large tensor-to-scalar ratio from t...
We study an inflation model driven by a triplet of antisymmetric tensor fields, with minimal and non...
We use the PLANCK 2018 and the WMAP data to constraint inflation models driven by a scalar field $\p...
We quantify the degree of fine tuning required to achieve an observationally viable period of inflat...
If cosmological inflation is due to a slowly rolling single inflation field taking trans-Planckian v...
In this paper my prime objective is to explain the generation of large tensor-to-scalar ratio from t...
In this paper we provide an accurate bound on primordial gravitational waves, i.e. tensor-to-scalar ...
AbstractIn this paper we provide an accurate bound on primordial gravitational waves, i.e. tensor-to...
Inflationary cosmology proposes that the early Universe undergoes accelerated expansion, driven, in ...
We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral moti...
We propose a novel scenario of primordial inflation in which the inflaton goes through a spiral moti...
We investigate all single-field, slow-roll inflationary models whose slow-roll parameters scale as 1...
We investigate all single-field, slow-roll inflationary models whose slow-roll parameters scale as 1...
We study to what extent the spectral index ns and the tensor-to-scalar ratio r determine the field...
We investigate all single-field, slow-roll inflationary models whose slow-roll parameters scale as 1...
In this paper my prime objective is to explain the generation of large tensor-to-scalar ratio from t...
We study an inflation model driven by a triplet of antisymmetric tensor fields, with minimal and non...
We use the PLANCK 2018 and the WMAP data to constraint inflation models driven by a scalar field $\p...
We quantify the degree of fine tuning required to achieve an observationally viable period of inflat...
If cosmological inflation is due to a slowly rolling single inflation field taking trans-Planckian v...
In this paper my prime objective is to explain the generation of large tensor-to-scalar ratio from t...
.jpg%3Fwidth%3D300&w=3840&q=75)
Add to ORKG