تقرير
New one-parametric extension of the Starobinsky inflationary model
| العنوان: | New one-parametric extension of the Starobinsky inflationary model |
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| المؤلفون: | Pozdeeva, Ekaterina O., Vernov, Sergey Yu. |
| المصدر: | Phys. Scr. 98 (2023) 055001 |
| سنة النشر: | 2022 |
| المجموعة: | Astrophysics General Relativity and Quantum Cosmology |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | We propose a one-parametric extension of the Starobinsky $R+R^2$ model by adding the $(R+m^2\beta^2)^{3/2}$ term. The parameter $m$ is the inflaton mass, which is determined in the same way as in the Starobinsky model, and $\beta$ 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. Comment: 13 pages, 1 figure. v2: Accepted for publication in Physica Scripta |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1088/1402-4896/acc6a5 |
| URL الوصول: | http://arxiv.org/abs/2211.10988 |
| رقم الأكسشن: | edsarx.2211.10988 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1088/1402-4896/acc6a5 |
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