Fig. 2: Part of the correlation matrix between the power spectra and bispectrum.
From: Extracting high-order cosmological information in galaxy surveys with power spectra
The correlation matrix for the monopole of three types of power spectra (\({P}_{0}^{{{{{{{{\rm{pre}}}}}}}}},{P}_{0}^{{{{{{{{\rm{post}}}}}}}}},{P}_{0}^{{{{{{{{\rm{cross}}}}}}}}}\)), and of the bispectrum in the squeezed limit (\({B}_{0}^{{{{{{{{\rm{SL}}}}}}}}}\)), i.e. k1 = k2 ≫ k3, derived from the Molino galaxy mocks. The horizontal and vertical lines separate each block for visualisation. For all blocks, the associated k or k1 increases from 0.01 to 0.5 hMpc−1, from left to right and from bottom to top.
