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arXiv · 1304.7785

Symmetries of Vector Perturbations during the de Sitter Epoch

Matteo Biagetti·Alex Kehagias·Enrico Morgante·Hideki Perrier·Antonio Riotto
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Abstract

We analyze the class of models where a suitable coupling between the inflaton field and the vector field gives rise to scale-invariant vector perturbations. We exploit the fact that the de Sitter isometry group acts as conformal group on the three-dimensional Euclidean space for the super-Hubble fluctuations in order to characterize the correlators involving the inflaton and the vector fields.

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Matteo Biagetti, Alex Kehagias, Enrico Morgante, Hideki Perrier, Antonio Riotto. 2013-06-03. Symmetries of Vector Perturbations during the de Sitter Epoch. https://doi.org/10.1088/1475-7516%2F2013%2F07%2F030

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