The anisotropy of a three- and a one-form

We calculate the anisotropic signal associated with the coupling of a three-form with an Abelian vector gauge field. In the simplest examples of three-form inflation the amplification of the vector fluctuations is exponential; this makes it almost certain that a large anisotropy will develop, severe...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2013-08, Vol.2013 (8), p.1-12, Article 008
Main Author: Urban, Federico R
Format: Article
Language:English
Subjects:
AMPLIFICATION
ANISOTROPY
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
Constraining
COSMOLOGY
COUPLING
Fluctuation
FLUCTUATIONS
GAUGE INVARIANCE
Inflation
INFLATIONARY UNIVERSE
INFLATONS
Joining
Mathematical analysis
SIGNALS
VECTORS
Vectors (mathematics)
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Summary:We calculate the anisotropic signal associated with the coupling of a three-form with an Abelian vector gauge field. In the simplest examples of three-form inflation the amplification of the vector fluctuations is exponential; this makes it almost certain that a large anisotropy will develop, severely constraining the viability of the coupling.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2013/08/008