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astro-ph2004
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…
astro-ph2003
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…
astro-ph2002★ 1 cited
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…