The anisotropy of a three- and a one-form

Abstract

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.

References in corpus (3)

• Magnetic fields from inflation?
• The Nature of Primordial Fluctuations from Anisotropic Inflation
• Inflation from N-Forms and its stability

Cited by in corpus (5)

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• Inflationary magnetogenesis with reheating phase from higher curvature coupling
• Pseudoscalar N-flation and axial coupling revisited
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