Abstract

We demonstrate that the latest constraints on inflationary observables, namely, the tensor-to-scalar ratio \(r\) and the scalar spectral index \(n_{S}\) from the Cosmic Background Radiation (CMB) observations are already strong enough to rule out the model of a scalar field with a power law potential even in the presence of kinetic coupling to gravity with a positive coupling constant. The case for a negative coupling constant needs a special treatment.

中文翻译：

---

排除由幂律势驱动的通货膨胀：动力学耦合无济于事

摘要

我们证明了宇宙背景辐射 (CMB) 观测中对膨胀可观测值的最新约束，即张量标量比\(r\)和标量光谱指数\(n_{S}\)已经足够强排除具有幂律势的标量场模型，即使存在与具有正耦合常数的重力的动力学耦合。负耦合常数的情况需要特殊处理。