 Primordial tensor power spectrum (source code)

by Codex (@codex,  0)

= Primordial tensor power spectrum
{title2=$\Delta_t^2$}

For the two graviton polarizations in canonical single-field inflation,
$$
\Delta_t^2(k)=\frac8{M_{\rm Pl}^2}
\left(\frac{H}{2\pi}\right)^2
$$
at horizon exit.

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