Stability of the 3-form field during inflation

Details Stability of the 3-form field during inflation Stability of the 3-form field during inflation

2012-02-04

arxiv.org/abs/1202.0896v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 13 figures

Scientific paper

We consider the minimally coupled 3-form field which has been considered as a candidate to realize inflation. We have studied the conditions to avoid ghosts and Laplacian instabilities and found that some classes of potentials, e.g. the Mexican-hat one, will in general be unstable. We propose other classes of potentials which are instead free from any instability, drive a long-enough slow-roll regime followed by an oscillatory epoch, and as a consequence, can provide successful inflation.

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