I'm using CAMB and need to plot the cross-correlation power spectrum between the Cold Dark Matter (CDM) density and the Weyl potential. How do I specify these quantities in CAMB's power spectrum functions, and what are their exact variable names?
Navigate to the official CAMB documentation (camb.readthedocs.io). Locate and navigate to the 'Matter power spectrum and matter transfer function variables' section. Identify the variable name for CDM density. Identify the variable name for the Weyl potential. Confirm how to request the cross-correlation power spectrum using these variables.
State that the variable name for CDM density is 'delta_cdm'. State that the variable name for the Weyl potential is 'Weyl'. Confirm that the cross-correlation power spectrum can be obtained by requesting these two variables (e.g., var1='delta_cdm', var2='Weyl').