标题： G-恒定滚动暴胀 显示英文标题

标题： G-constant-roll inflation

摘要： 在伽利略暴胀或G-暴胀的背景下分析了恒定滚动暴胀。通过考虑G-暴胀模型的耦合函数$G(\varphi,\chi)\propto g(\varphi)\,\chi^n$，我们发现了在恒定滚动暴胀背景下适合的暴胀模型的不同表达式。为了获得解析解，我们分析了两种特殊情况；$g(\varphi)=\varphi$和$n=0$，即$G(\varphi,\chi)\propto\,\varphi$和当$g(\varphi)=$为常数且$n=1$与$G(\varphi,\chi)\propto\,\chi$相关时的情况。在这两种情况下，我们在恒定滚动暴胀框架中找到了背景变量和宇宙学扰动的重建的不同表达式。 我们利用最近的天文学观测来限制常滚动阶段中出现的不同参数以及耦合函数$G(\varphi,\chi)$。 显示英文摘要

摘要： The constant-roll inflation in the context of Galilean inflation or G-inflation is analyzed. By considering a coupling function $G(\varphi,\chi)\propto g(\varphi)\,\chi^n$ for the model of G-inflation, we find different expressions for a suitable development of a model inflationary in the context of constant roll inflation. In order to obtain analytical solutions, we analyze two specific cases; $g(\varphi)=\varphi$ and $n=0$, i.e., $G(\varphi,\chi)\propto\,\varphi$ and when $g(\varphi)=$ constant and $n=1$ with which $G(\varphi,\chi)\propto\,\chi$. In both cases, we find different expressions for the reconstruction of the background variables and the cosmological perturbations in the framework the constant roll inflation. We utilize recent astronomical observations to constrain the different parameters appearing in the stage of constant roll condition as well in the coupling function $G(\varphi,\chi)$.