89 citations · 670 across the 46 of their papers we have counts for
4 papers · 1 filter
Fine tuning and the ratio of tensor to scalar density fluctuations from cosmological inflation
Shaun Hotchkiss, Gabriel German, Graham G Ross +1
The form of the inflationary potential is severely restricted if one requires that it be natural in the technical sense, i.e. terms of unrelated origin are not required to be corre…
A model of inflation independent of the initial conditions, with bounded number of e-folds and n_s larger orsmaller than one
G. German, A. de la Macorra
We study a supergravity model of inflation essentially depending on one parameter which can be identified with the slope of the potential at the origin. In this type of models the…
Inflation at the maxima of the potentials
G. German, A. de la Macorra
We construct a two-stage inflationary model which can accommodate early inflation at a scale as well as a second stage of inflation at with a single scalar field . W…
Cosmology for Scalar Fields with Negative Potentials and w <-1
A. de la Macorra, G. German
We study the cosmology of canonically normalized scalar fields that lead to an equation of state parameter of w_ϕ=p_ϕ/ρ_ϕ<-1 without violating the weak energy condition: rho=Σ_iρ_i…