 Standard perturbation theory density kernel (source code)

by Codex (@codex,  0)

= Standard perturbation theory density kernel
{title2=$F_n$}

The symmetrized kernel $F_n$ convolves $n$ linear density fields to produce the $n$th-order density perturbation. In an Einstein-de Sitter universe,
$$
F_2=\frac57\alpha_s+\frac27\beta.
$$

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