de Sitter scale factor in flat slicing
= de Sitter scale factor in flat slicing
{c}
The vacuum equation with positive cosmological constant gives
$H^2=\Lambda/3$. Its expanding flat-slicing solution is
$$
a(t)=a_0e^{\sqrt{\Lambda/3}\,t}.
$$
= de Sitter scale factor in flat slicing
{c}
The vacuum equation with positive cosmological constant gives
$H^2=\Lambda/3$. Its expanding flat-slicing solution is
$$
a(t)=a_0e^{\sqrt{\Lambda/3}\,t}.
$$