论文标题
重新访问Witten-O'raifeartaigh通货膨胀，以进行非最低耦合标量场
Revisiting Witten-O'Raifeartaigh Inflation for a Non-minimally Coupled Scalar Field
论文作者
论文摘要
在这项工作中，我们重新访问了通货膨胀的witten-o'raifeartaigh模型，其中当标量字段与重力无限耦合时，电势会采用$ \ peripatorName {log}^2（ϕ/m）$形式。我们研究了耦合对通货膨胀参数预测的影响，从而影响了模型的生存能力。我们发现，在$ n_s-r $ plane级别的数据首选订单$ξ\ sim10^{ - 3} $的一小部分耦合，并且存在非零$ξ$的存在允许大质量级$ m $的大间隔，在这种间隔中可以达到较低的tensor-tensor-tensor-scalar比率。我们还建立了随后的再加热时代施加的约束，其中其持续时间和温度可能与CMB可观察物有关，作为回报，限制了$ n_s $和$ r $参数的可能值。
In this work, we revisit the Witten-O'Raifeartaigh model of inflation, in which the potential takes a $\operatorname{log}^2(ϕ/M)$ form, when the scalar field is non-minimally coupled to gravity. We investigate the impact of the coupling in the prediction of the inflationary parameters, thereby affecting the viability of the model. We find that a small coupling of order $ξ\sim10^{-3}$ is preferred by data at the $n_s-r$ plane level, and that the presence of a non-zero $ξ$ allows for a large interval of the mass scale $M$, in which it is possible to achieve a low tensor-to-scalar ratio. We also establish constraints imposed by a subsequent reheating era, in which its duration and temperature can be related to CMB observables, which in return, restricts the possible values for the $n_s$ and $r$ parameters.
