Starobinsky-like two-field inflation

Starobinsky-like two-field inflation

Detalles Bibliográficos
Parent link:European Physical Journal C: Scientific Journal
Vol. 76, iss. 1.— 2016.— [14 р.]
Autor Principal: Kaneda S. Sho
Autor Corporativo: Национальный исследовательский Томский политехнический университет Физико-технический институт Кафедра прикладной физики (№ 12)
Outros autores: Ketov S. V. Sergey Vladimirovich
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
Publicado: 2016
Subjects:
электронный ресурс
труды учёных ТПУ
Acceso en liña:http://dx.doi.org/10.1140/epjc/s10052-016-3888-0
Formato: Electrónico Capítulo de libro
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=648000

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