We explicitly calculate nonthermal gravitino production during the preheating period in the inflationary Universe. Contrary to earlier investigations, we consider a two--field model to separate the mechanisms of supersymmetry breaking and inflation. We show that the superpartner of the inflaton is significantly generated, while the gravitino production is considerably smaller. Nonthermal production of gravitinos seems thus less worrisome than recently claimed
We provide the formalism for the quantization of systems of coupled bosonic and fermionic fields in ...
We review our results on the calculation of helicity 1/2 gravitino production during preheating. The...
Brief review of some current topics, including gravitino creation and large extra dimensions
The excessive production of gravitinos in the early universe destroys the successful predictions of ...
We investigate the production of gravitinos in a cosmological background. Gravitinos can be produced...
We show that the gravitino-overproduction problem is prevalent among inflation models in supergravit...
We consider the potential problems due to the production of inflatinos and gravitinos after inflatio...
We revisit gravitino production following inflation. As a first step, we review the standard calcula...
It has been argued that supergravity models of inflation with vanishing sound speeds, cs, lead to an...
We revisit gravitino production following inflation. As a first step, we review the standard calcula...
We show that the non-perturbative decay of the inflaton field enhances the production of gravitinos ...
In order to discriminate between inflatino and gravitino production, the situation in which the two ...
We discuss toy models where supersymmetry is broken due to non-vanishing time-varying vacuum expecta...
We study the production of gravitinos during the preheating era after inflation by means of the non-...
We investigate non-thermal gravitino production after tribrid inflation in supergravity, which is a ...
We provide the formalism for the quantization of systems of coupled bosonic and fermionic fields in ...
We review our results on the calculation of helicity 1/2 gravitino production during preheating. The...
Brief review of some current topics, including gravitino creation and large extra dimensions
The excessive production of gravitinos in the early universe destroys the successful predictions of ...
We investigate the production of gravitinos in a cosmological background. Gravitinos can be produced...
We show that the gravitino-overproduction problem is prevalent among inflation models in supergravit...
We consider the potential problems due to the production of inflatinos and gravitinos after inflatio...
We revisit gravitino production following inflation. As a first step, we review the standard calcula...
It has been argued that supergravity models of inflation with vanishing sound speeds, cs, lead to an...
We revisit gravitino production following inflation. As a first step, we review the standard calcula...
We show that the non-perturbative decay of the inflaton field enhances the production of gravitinos ...
In order to discriminate between inflatino and gravitino production, the situation in which the two ...
We discuss toy models where supersymmetry is broken due to non-vanishing time-varying vacuum expecta...
We study the production of gravitinos during the preheating era after inflation by means of the non-...
We investigate non-thermal gravitino production after tribrid inflation in supergravity, which is a ...
We provide the formalism for the quantization of systems of coupled bosonic and fermionic fields in ...
We review our results on the calculation of helicity 1/2 gravitino production during preheating. The...
Brief review of some current topics, including gravitino creation and large extra dimensions