We analyze primordial non-Gaussianity in single-field inflationary models when the tensor-to-scalar ratio is large. Our results show that detectable levels of non-Gaussianity fNL∼50 are still possible in the simplest class of models described by the effective theory of inflation. However, the shape is very tightly constrained, making a sharp prediction that could be confirmed or falsified by a future detection of non-Gaussianity. © 2014 American Physical Society.
Non-gaussianity after BICEP2 / D'Amico, Guido; Kleban, Matthew. - In: PHYSICAL REVIEW LETTERS. - ISSN 1079-7114. - 113:8(2014). [10.1103/PhysRevLett.113.081301]
Non-gaussianity after BICEP2
D'Amico, Guido;
2014-01-01
Abstract
We analyze primordial non-Gaussianity in single-field inflationary models when the tensor-to-scalar ratio is large. Our results show that detectable levels of non-Gaussianity fNL∼50 are still possible in the simplest class of models described by the effective theory of inflation. However, the shape is very tightly constrained, making a sharp prediction that could be confirmed or falsified by a future detection of non-Gaussianity. © 2014 American Physical Society.File in questo prodotto:
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