论文标题

Brane通货膨胀和Starobinsky通货膨胀模型的鲁棒性

Brane inflation and the robustness of the Starobinsky inflationary model

论文作者

da Costa, S. Santos, Benetti, M., Neves, R. M. P., Brito, F. A., Silva, R., Alcaniz, J. S.

论文摘要

构思的第一个通货膨胀模型是Starobinsky提出的通货膨胀模型,其中包括Einstein-Hilbert Action中Ricci-Scalar R中的另一种术语二次。鉴于其与当前观察数据的兼容性,该模型现在被认为是几个未来宇宙微波背景实验的目标。在本文中,我们通过将其插入基于$β$ -Starobinsky膨胀潜力的广义情景中来分析Starobinsky通胀的鲁棒性,这是通过Brane通货膨胀而动机的。在爱因斯坦框架中,广义模型以$β= 0 $恢复了原始模型,而$ \ forall的β\ neq 0 $代表了一种扩展的模型,这些模型允许更广泛的溶液范围。我们调查了从当前宇宙微波背景和Baryonic声学振荡数据中对$β$的限制,发现只允许与原始场景有很小的偏差,$β= -0.08 \ pm 0.12 $ 0.12 $(68%c.l.),这与零兼容,并确认了starobinskinsky Alteration interation interivation nightim insim night of Curtration insim in light of Curtration insim in light of Curtration insim in light of Cernaliation insim in light。

The first inflationary model conceived was the one proposed by Starobinsky which includes an additional term quadratic in the Ricci-scalar R in the Einstein-Hilbert action. The model is now considered a target for several future cosmic microwave background experiments given its compatibility with current observational data. In this paper, we analyse the robustness of the Starobinsky inflation by inserting it into a generalized scenario based on a $β$-Starobinsky inflation potential, which is motivated through brane inflation. In the Einstein frame, the generalized model recovers the original model for $β=0$, whereas $\forall β\neq 0$ represents an extended class of models that admit a wider range of solutions. We investigate limits on $β$ from current cosmic microwave background and baryonic acoustic oscillation data and find that only a small deviation from the original scenario is allowed, $β=-0.08 \pm 0.12$ (68% C.L.), which is fully compatible with zero and confirms the robustness of the Starobinsky inflationary model in light of current observations.

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