Scalar perturbations in p-nflation: the 3-form case
arXiv:0908.0001 · doi:10.1103/PhysRevE.80.061404
Abstract
We calculate the primordial spectrum of scalar perturbations of the 3-form inflation and we find that the curvature perturbations decay at late times. As as result, although a non-minimally coupled massive 3-form field may drive inflation at early times, it should be assisted by other fields in order to reproduce the observed temperature fluctuations of the CMB sky.
13 pages; v4: clarifications added. Comment on the gravitational instability of 1- and 2-form inflation added. Version accepted in JCAP
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- Constraining anisotropic models of the early Universe with WMAP9 data
- Linear perturbations in vector inflation and stability issues
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