论文标题
Planck2018之后的高斯河网通货膨胀
Gauss-Bonnet Inflation after Planck2018
论文作者
论文摘要
我们研究了高斯 - 骨网络项非最小耦合与规范和非典型和非典型（DBI和Tachyon）标量场的模型中的原始扰动和再加热过程。我们将几种潜力和高斯 - 骨网耦合项视为幂律，类似于dilaton，$ \ cosh $ -type，e-Model和t-Model。为了寻求这些模型的观察性生存能力，我们以数值来研究标量扰动，并将结果与Planck2018 TT，TE，EE+Lowe+LOWE+镜头+BK14+BK14+BAO关节数据进行比较，价格为$ 68 \％\％$ $ Cl和$ 95 \％$ Cl。我们还研究了与Planck2018 TT，TE，EE+LOWE+LESING+BK14+BK14+BAO+LIGO+LIGO $ \＆$ $ $ \＆$ pirgo2016联合数据在与Planck2018 TT对抗中的张量摄动。在这方面，我们获得了高斯桥耦合参数$β$的一些约束。早期宇宙中的另一个重要过程是通货膨胀后的重新加热阶段，这是重新加热宇宙以进行后续进化所必需的。在这方面，我们研究了这些模型中的再加热过程，并在该时代找到了E折数量和温度的一些表达式。 Considering that from Planck TT,TE,EE+lowEB+lensing data and BICEP2/Keck Array 2014, based on the $Λ$CDM$+r+\frac{dn_{s}}{d\ln k}$ model, we have $n_{s}=0.9658\pm 0.0038$ and $r<0.072$, we obtain some constraints在电子折数和温度上。从电子折数数的值和状态的有效方程式以及标量光谱指数的观察值可行值，我们探讨了模型在解释加热阶段的能力。
We study the primordial perturbations and reheating process in the models where the Gauss-Bonnet term is non-minimally coupled to the canonical and non-canonical (DBI and tachyon) scalar fields. We consider several potentials and Gauss-Bonnet coupling terms as power-law, dilaton-like, $\cosh$-type, E-model and T-model. To seek the observational viability of these models, we study the scalar perturbations numerically and compare the results with the Planck2018 TT, TE, EE+lowE+lensing+BK14+BAO joint data at $68\%$ CL and $95\%$ CL. We also study the tensor perturbations in confrontation with the Planck2018 TT, TE, EE+lowE+lensing+BK14+BAO+ LIGO$\&$Virgo2016 joint data at $68\%$ CL and $95\%$ CL. In this regard, we obtain some constraints on the Gauss-Bonnet coupling parameter $β$. Another important process in the early universe is the reheating phase after inflation which is necessary to reheat the universe for subsequent evolution. In this regard, we study the reheating process in these models and find some expressions for the e-folds number and temperature during that era. Considering that from Planck TT,TE,EE+lowEB+lensing data and BICEP2/Keck Array 2014, based on the $Λ$CDM$+r+\frac{dn_{s}}{d\ln k}$ model, we have $n_{s}=0.9658\pm 0.0038$ and $r<0.072$, we obtain some constraints on the e-folds number and temperature. From the values of the e-folds number and the effective equation of state and also the observationally viable value of the scalar spectral index, we explore the capability of the models in explaining the reheating phase.
