%0 Journal Article %1 Bartolo2010 %A Bartolo, Nicola %A Fasiello, Matteo %A Matarrese, Sabino %A Riotto, Antonio %D 2010 %K inflation non-gaussian %T Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum %U http://arxiv.org/abs/1004.0893 %X The methods of effective field theory are used to study generic theories of inflation with a single inflaton field and to perform a general analysis of the associated non-Gaussianities. We investigate the amplitudes and shapes of the various generic three-point correlators, the bispectra, which may be generated by different classes of single-field inflationary models. Besides the well-known results for the DBI-like models and the ghost inflationary theories, we point out that curvature-related interactions may give rise to large non-Gaussianities in the form of bispectra characterized by a flat shape which is rather uncommon in single-field models of inflation. In a subsequent work, we will perform a similar general analysis for the non-Gaussianities generated by the generic four-point correlator, the trispectrum.

@article{Bartolo2010, abstract = { The methods of effective field theory are used to study generic theories of inflation with a single inflaton field and to perform a general analysis of the associated non-Gaussianities. We investigate the amplitudes and shapes of the various generic three-point correlators, the bispectra, which may be generated by different classes of single-field inflationary models. Besides the well-known results for the DBI-like models and the ghost inflationary theories, we point out that curvature-related interactions may give rise to large non-Gaussianities in the form of bispectra characterized by a flat shape which is rather uncommon in single-field models of inflation. In a subsequent work, we will perform a similar general analysis for the non-Gaussianities generated by the generic four-point correlator, the trispectrum. }, added-at = {2010-04-08T11:01:05.000+0200}, author = {Bartolo, Nicola and Fasiello, Matteo and Matarrese, Sabino and Riotto, Antonio}, biburl = {https://www.bibsonomy.org/bibtex/2306683f17a594147482a0c1fd279a541/jpschaar}, description = {Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum}, interhash = {05d7ce86aab0bbe14dc4dea2c767577b}, intrahash = {306683f17a594147482a0c1fd279a541}, keywords = {inflation non-gaussian}, note = {cite arxiv:1004.0893 Comment: 30 pages, 20 figures}, timestamp = {2010-04-08T11:01:05.000+0200}, title = {Large non-Gaussianities in the Effective Field Theory Approach to Single-Field Inflation: the Bispectrum}, url = {http://arxiv.org/abs/1004.0893}, year = 2010 }