محفوظ في:
| المؤلفون الرئيسيون: | , , |
|---|---|
| التنسيق: | Preprint |
| منشور في: |
2025
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://arxiv.org/abs/2505.03608 |
| الوسوم: |
إضافة وسم
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جدول المحتويات:
- We introduce a modification of the Starobinsky model in the form of an additional cubic Ricci scalar curvature term $\sim αR^3$, scaled by a dimensionless parameter $α$, with the resulting inflaton potential being the standard Starobinsky potential modified to first parametric order by an additive term. The resulting potential is identical to the potential obtained by a modification of the superpotential employed in the construction of the Starobinsky model in the framework of no-scale supergravity, thus, extending the correspondence between a class of no-scale supergravity models and modifications of the Starobinsky model. We analyze the inflationary predictions of the model and find that for $-4.2 \times 10^{-5} \lesssim α\lesssim -1.9 \times 10^{-5}$, the modified Starobinsky model is in full agreement with the recent observational data from the Atacama Cosmology Telescope, for a range of $e$-folds, $N_\star = 50-60$.