论文标题
动力学稳定通货膨胀
Kinetically stabilized inflation
论文作者
论文摘要
在这项工作中，我们提出了一个以字符串启发的两个字段通货膨胀模型来解决标准通货膨胀模型所遭受的微调问题。快速旋转的tachyon $ \ Mathcal {t} $起源于d-brane和anti-d-brane对灭绝，lock lock lock lock location the forthon $φ$慢慢滚动在像希格斯的潜在$ v（φ）=-m_φ^2φ^2φ^2φ^2+λφ^4 $中，并驱动了kinetiped akinet稳定（kss）的易位。我们的数值模拟证实了这种解决方案是动态吸引子。特别是，对于$λ<0.8 \ times 10^{ - 3} $，由KS通货膨胀阶段贡献的电子折叠数可以大于$ 62 $，以解决大爆炸理论的地平线和平坦问题。值得注意的是，这种KS通胀产生了与当前宇宙微波背景（CMB）观测值一致的几乎规模不变的原始曲率扰动光谱。它预测了低张量与尺度比率，当前原始引力波背景（CMB中的B模型）搜索有利。
In this work, we propose a string-inspired two fields inflation model to address the fine-tuning problem that the standard inflation model suffers. The fast-rolling tachyon $\mathcal{T}$ originated from the D-brane and anti-D-brane pair annihilation locks the inflaton $φ$ slowly rolling on a Higgs-like potential $V(φ)=-m_φ^2φ^2+λφ^4$ and drives a kinetically stabilized (KS) inflation. Our numerical simulation confirms such a solution is a dynamic attractor. In particular, for $λ< 0.8\times 10^{-3}$, the e-folding number contributed by the KS inflation phase can be larger than $62$ to solve the horizon and flatness problems of Big Bang theory. Notably, this KS inflation generates a nearly scale-invariant primordial curvature perturbations spectrum consistent with current cosmic microwave background (CMB) observations. It predicts a low tensor-to-scalar ratio, which the current primordial gravitational wave background (the B-modes in CMB) searches favor.
