1 citations · 1 across the 1 of their papers we have counts for
4 papers
The Mass, Normalization and Late Time behavior of the Tachyon Field
A. de la Macorra, U. Filobello, G. German
We study the dynamics of the tachyon field . We derive the mass of the tachyon as the pole of the propagator which does not coincide with the standard mass given in the literatu…
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…