It may be difficult to single out the best model of dark energy on the basis of the existing and ... more It may be difficult to single out the best model of dark energy on the basis of the existing and planned cosmological observations, because many different models can lead to similar observational consequences. However, each particular model can be studied and either found consistent with observations or ruled out. In this paper, we concentrate on the possibility to test and
We explain that supersymmetric attractors in general have several critical points due to the alge... more We explain that supersymmetric attractors in general have several critical points due to the algebraic nature of the stabilization equations. We show that the critical values of the cosmological constant of the AdS5 vacua are given by the topological (moduli independent) formulae analogous to the entropy of the d = 5 supersymmetric black holes. We present conditions under which more
We investigate the production of gravitinos in a cosmological background. Gravitinos can be produ... more We investigate the production of gravitinos in a cosmological background. Gravitinos can be produced during preheating after inflation due to a combined effect of interactions with an oscillating inflation field and the absence of conformal invariance. In order to get insight into the conformal properties of a gravitino we reformulate phenomenological supergravity in an SU(2,2\|1)-symmetric way. The Planck mass and
It may be difficult to single out the best model of dark energy on the basis of the existing and ... more It may be difficult to single out the best model of dark energy on the basis of the existing and planned cosmological observations, because many different models can lead to similar observational consequences. However, each particular model can be studied and either found consistent with observations or ruled out. In this paper, we concentrate on the possibility to test and
We explain that supersymmetric attractors in general have several critical points due to the alge... more We explain that supersymmetric attractors in general have several critical points due to the algebraic nature of the stabilization equations. We show that the critical values of the cosmological constant of the AdS5 vacua are given by the topological (moduli independent) formulae analogous to the entropy of the d = 5 supersymmetric black holes. We present conditions under which more
We investigate the production of gravitinos in a cosmological background. Gravitinos can be produ... more We investigate the production of gravitinos in a cosmological background. Gravitinos can be produced during preheating after inflation due to a combined effect of interactions with an oscillating inflation field and the absence of conformal invariance. In order to get insight into the conformal properties of a gravitino we reformulate phenomenological supergravity in an SU(2,2\|1)-symmetric way. The Planck mass and
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Papers by Andrei Linde