Ultraviolet sensitivity of the one-loop matter power spectrum
= Ultraviolet sensitivity of the one-loop matter power spectrum
For internal momentum $q\gg k$, the <P22 contribution to the one-loop matter power spectrum> starts at $k^4$, while twice the <P13 contribution to the one-loop matter power spectrum> starts at $k^2P(k)$. The latter has the same momentum dependence as the <effective sound-speed counterterm in large-scale structure>. Short-scale stochastic contributions start at $k^4$ by mass and <momentum conservation>.