| Автор | Yi-Fu Cai |
| Автор | Xinmin Zhang |
| Дата выпуска | 2009-06-01 |
| dc.description | In this paper we study the primordial perturbations generated in an inflation model in which the period of inflation is preceded by a cosmological bounce. After reviewing the background evolution in this model we study the resulting curvature perturbations, entropy fluctuations and non-Gaussianities. Our results show that both the power spectrum of curvature perturbations and the spectra describing the non-Gaussianities obtain oscillatory features. Next, we calculate the tensor perturbations in this model and find a valley in its spectrum. This is a generic feature of inflationary models with a bounce. Further observational signatures and theoretical implications of the model are discussed. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Evolution of metric perturbations in a model of nonsingular inflationary cosmology |
| Тип | paper |
| DOI | 10.1088/1475-7516/2009/06/003 |
| Electronic ISSN | 1475-7516 |
| Журнал | Journal of Cosmology and Astroparticle Physics |
| Том | 2009 |
| Первая страница | 3 |
| Последняя страница | 003 |
| Аффилиация | Yi-Fu Cai; Institute of High Energy Physics, Chinese Academy of Sciences, P.O.Box 918-4, Beijing 100049, P. R. China |
| Аффилиация | Xinmin Zhang; Institute of High Energy Physics, Chinese Academy of Sciences, P.O.Box 918-4, Beijing 100049, P. R. China |
| Выпуск | 06 |
