论文标题
使用Palatini形式主义的修改后的$ F（R，ϕ）$重力模型的恒定滚动通胀
Constant-Roll Inflation in modified $f(R,ϕ)$ gravity model using Palatini Formalism
论文作者
论文摘要
在这项工作中，我们使用修饰的重力研究了Palatini形式主义中的恒定式通货膨胀模型。在这里，我们的操作包括标量字段$ ϕ $与RICCI标量$ r $的非最小耦合，总形式为$ f（r，ϕ）$。使用palatini方法，我们在爱因斯坦框架中编写其等效标量调整形式，然后将恒定滚动条件应用于加速器场的运动方程。后来，使用慢速参数计算张量与量表的比率和频谱指数，并且获得的结果与Planck 2018数据匹配。我们发现，结果与所考虑的参数制度内的观察结果非常吻合。
In this work, we study a constant-roll inflationary model in the Palatini formalism using modified gravity. Here our action consists a non-minimal coupling of a scalar field $ϕ$ with Ricci scalar $R$ in a general form of $f(R,ϕ)$. Using Palatini approach, we write its equivalent scalar-tensor form in the Einstein frame and then apply the constant-roll condition in the equation of motion for the inflaton field. Later the tensor-to-scalar ratio and the spectral index are calculated using the slow-roll parameters and the results obtained are matched with the Planck 2018 data. We found that the results agree nicely with the observations within the parameter regime under consideration.
