| Автор | Nicola Bartolo |
| Автор | Matteo Fasiello |
| Автор | Sabino Matarrese |
| Автор | Antonio Riotto |
| Дата выпуска | 2010-12-01 |
| dc.description | Employing an effective field theory approach to inflationary perturbations, we analyze in detail the effect of curvature-generated Lagrangian operators on various observables, focusing on their running with scales. At quadratic order, we solve the equation of motion at next-to-leading leading order in a generalized slow-roll approximation for a very general theory of single-field inflation. We derive the resulting power spectrum, its tilt and running. We then focus on the contribution to the primordial non-Gaussianity amplitude f<sub>NL</sub> sourced by a specific interaction term. We show that the running of f<sub>NL</sub> can be substantially larger than what dictated by the slow-roll parameters. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Tilt and running of cosmological observables in generalized single-field inflation |
| Тип | paper |
| DOI | 10.1088/1475-7516/2010/12/026 |
| Electronic ISSN | 1475-7516 |
| Журнал | Journal of Cosmology and Astroparticle Physics |
| Том | 2010 |
| Первая страница | 26 |
| Последняя страница | 026 |
| Выпуск | 12 |
