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Scalar perturbations in p-nflation: the 3-form case

Cristiano Germania and Alex Kehagiasb

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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.

Keywords

modified gravity

cosmological perturbation theory

inflation

 

E-print Number: 0908.0001

Cited: by |

Refers: to

PACS

98.80.Cq Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.)

95.30.Sf Relativity and gravitation

04.50.-h Higher-dimensional gravity and other theories of gravity

98.70.Vc Background radiations

Subjects

Gravitation and cosmology

Astrophysics and astroparticles

Dates

Issue 11 (November 2009)

Received 10 August 2009, accepted for publication 3 October 2009

Published 5 November 2009



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