Freezing of linear growth under a positive cosmological constant
= Freezing of linear growth under a positive cosmological constant
{title2=$D_+(a)\to D_\infty$}
When $H\to H_\Lambda>0$, the growth <integral> has an integrable $a^{-3}$ tail. Its product with $H$ tends to a constant, with leading correction proportional to $a^{-2}$ in a matter-plus-Lambda background. Both displayed basis functions can tend to constants; a linear combination cancels that constant and isolates the truly decaying late-time $a^{-2}$ behavior.