What does the marked power spectrum measure? Insights from perturbation theory
What does the marked power spectrum measure? Insights from perturbation theory
The marked power spectrum is capable of placing far tighter constraints on cosmological parameters (particularly the neutrino mass) than the conventional power spectrum. What new information does it contain beyond conventional statistics? Through the development of a perturbative model, we find that the mark induces a significant coupling between non-Gaussianities, …