Large non-Gaussianity generated at the end of Extended D-term Hybrid Inflation
arXiv:0908.4168
Abstract
In this paper, we show that if we extend D-term hybrid inflation by adding a light scalar field which couples to a waterfall field, large non-Gaussianity can be generated at the end of inflation. Contribution of cosmic strings generated after D-term inflation to the Cosmic Microwave Background (CMB) angular power spectrum can be as low as 10% and this also evade the spectral index problem.
arXiv comment8 pages
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