标题： G-常数滚动膨胀 显示英文标题

标题： G-constant-roll inflation

摘要： 在Galilean膨胀或G-膨胀的背景下分析恒定滚动膨胀。通过考虑G-膨胀模型中的耦合函数$G(\varphi,\chi)\propto g(\varphi)\,\chi^n$，我们发现在恒定滚动膨胀的背景下适合模型膨胀的不同表达式。为了获得解析解，我们分析了两个特定情况：$g(\varphi)=\varphi$和$n=0$，即$G(\varphi,\chi)\propto\,\varphi$和当$g(\varphi)=$为常数且与$n=1$相关的情况$G(\varphi,\chi)\propto\,\chi$。在这两种情况下，我们在恒定滚动膨胀的框架下发现了背景变量和宇宙扰动重建的不同表达式。 我们利用最近的天文观测来约束常数滚动条件阶段以及耦合函数$G(\varphi,\chi)$中出现的不同参数。 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 $G(\varphi,\chi)$.