标题： 具有宇宙学常数的平坦尘埃FLRW宇宙的二阶扰动 显示英文标题

标题： Second Order Perturbations of Flat Dust FLRW Universes with a Cosmological Constant

摘要： 我们总结了关于平坦尘埃无旋FLRW模型中二阶扰动演化的最新结果，其中包含$\Lambda\ne 0$。 我们证明这些扰动在时间上渐近趋于常数，这与宇宙无毛猜想一致。 我们数值求解二阶纯量扰动方程，并简要讨论其在整个时间范围内的行为及其对结构形成的一些可能影响。 显示英文摘要

摘要： We summarize recent results concerning the evolution of second order perturbations in flat dust irrotational FLRW models with $\Lambda\ne 0$. We show that asymptotically these perturbations tend to constants in time, in agreement with the cosmic no-hair conjecture. We solve numerically the second order scalar perturbation equation, and very briefly discuss its all time behaviour and some possible implications for the structure formation.