Perturbations and non-Gaussianities in three-form inflationary magnetogenesis

Perturbations and non-Gaussianities in three-form inflationary magnetogenesis

We reconsider magnetogenesis in the context of three-form inflation, and its backreaction. In particular, we focus on first order perturbation theory during inflation and subsequent radiation era: we discuss the consistency of the perturbative approach, and elaborate on the possible non-Gaussian sig...

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Veröffentlicht in:Journal of cosmology and astroparticle physics 2012-09, Vol.2012 (9), p.1-29
Hauptverfasser: Urban, Federico R, Koivisto, Tomi K
Format: Artikel
Sprache:eng
Schlagworte:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Consistency
COSMOLOGY
DISTURBANCES
Inflation
INFLATIONARY UNIVERSE
INFLATONS
MAGNETIC FIELDS
Non-Gaussian
Perturbation methods
PERTURBATION THEORY
Signatures
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Beschreibung
Zusammenfassung:We reconsider magnetogenesis in the context of three-form inflation, and its backreaction. In particular, we focus on first order perturbation theory during inflation and subsequent radiation era: we discuss the consistency of the perturbative approach, and elaborate on the possible non-Gaussian signatures of the model.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2012/09/025