= Einstein-de Sitter metric growing mode
{c}
{title2=$h=A\tau^2+B\tau^{-3}$}
For the scalar metric variable satisfying $\ddot h+(\dot R/R)\dot h=4\pi G\bar\rho_mR^2h$, the <Einstein-de Sitter universe> has $\dot R/R=2/\tau$ and $4\pi G\bar\rho_mR^2=6/\tau^2$. The indicial equation is $p(p-1)+2p=6$, giving exponents $2$ and $-3$. Growth of this metric variable is not growth of every gauge-invariant potential; the growing dust density contrast is compatible with constant scalar gravitational potentials.
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