Starobinsky-like two-field inflation; European Physical Journal C; Vol. 76, iss. 1
| Parent link: | European Physical Journal C: Scientific Journal Vol. 76, iss. 1.— 2016.— [14 р.] |
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| Samenvatting: | 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 |
| Taal: | Engels |
| Gepubliceerd in: |
2016
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| Online toegang: | http://dx.doi.org/10.1140/epjc/s10052-016-3888-0 |
| Formaat: | Elektronisch Hoofdstuk |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648000 |
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| 200 | 1 | |a Starobinsky-like two-field inflation |f S. Kaneda, S. V. Ketov | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [Reference: 40 tit.] | ||
| 330 | |a 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. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t European Physical Journal C |o Scientific Journal | ||
| 463 | |t Vol. 76, iss. 1 |v [14 р.] |d 2016 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 700 | 1 | |a Kaneda |b S. |g Sho | |
| 701 | 1 | |a Ketov |b S. V. |c physicist |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1960- |g Sergey Vladimirovich |3 (RuTPU)RU\TPU\pers\36631 |9 19672 | |
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| 856 | 4 | |u http://dx.doi.org/10.1140/epjc/s10052-016-3888-0 | |
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