New one-parametric extension of the Starobinsky inflationary modelстатья
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Дата последнего поиска статьи во внешних источниках: 26 июня 2024 г.
Аннотация:We propose a one-parametric extension of the Starobinsky $R + R^2$ model by adding the $(R+m^2β^2)^{3/2}$ term. The parameter m is the inflaton mass, which is determined in the same way as in the Starobinsky model, and β is a dimensionless constant. Using the Einstein frame and the scalar field potential, we get the inflationary parameters of the model proposed. The value of the tensor-to-scalar ratio r can be significantly larger than in the Starobinsky model. The considered inflationary model is in a good agreement with the current observational data. The corresponding scalar field potential is a polynomial of the exponential function.