论文标题
$α'$ - 更正的弗里德曼方程的非线性稳定性
Non-linear stability of $α'$-corrected Friedmann equations
论文作者
论文摘要
我们研究了定点解决方案对$ $（d，d）$不变宇宙学的$α'$ - 精确方程的非线性稳定性，无论有没有问题。重新审视了文献中先前的非线性分析，并显示了其与已知线性扰动结果的兼容性。讨论了二元不变宇宙学中宇宙学扰动的一些形式方面，我们显示了用于扰动的时间反应不变变量的存在。
We study the non-linear stability of fixed-point solutions to the $α'$-exact equations from O$(d,d)$ invariant cosmology, with and without matter perturbations. Previous non-linear analysis in the literature is revisited, and its compatibility with known linear perturbation results is shown. Some formal aspects of cosmological perturbations in duality invariant cosmology are discussed, and we show the existence of time-reparameterization invariant variables for perturbations.
