Starobinsky-like two-field inflation
| Parent link: | European Physical Journal C: Scientific Journal Vol. 76, iss. 1.— 2016.— [14 р.] |
|---|---|
| Main Author: | |
| Corporate Author: | |
| Other Authors: | |
| Summary: | Title screen We consider an extension of the Starobinsky model, whose parameters are functions of an extra scalar field. Our motivation is to test the robustness (or sensitivity) of the Starobinsky inflation against mixing scalaron with another (matter) scalar field. We find that the extended Starobinsky model is (classically) equivalent to the two-field inflation, with the scalar potential having a flat direction. For the sake of fully explicit calculations, we perform a numerical scan of the parameter space. Our findings support the viability of the Starobinsky-like two-field inflation for a certain range of its parameters, which is characterized by the scalar index ns=0.96±0.01ns=0.96±0.01, the tensor-to-scalar ratio r<0.06r<0.06, and a small running of the scalar index at |αs|<0.05|αs|<0.05. Режим доступа: по договору с организацией-держателем ресурса |
| Published: |
2016
|
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1140/epjc/s10052-016-3888-0 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648000 |