CosmoCoffee

Hi all,

I wonder if there's an easy way to save the Newtonian potential for CAMB outputs? I know CAMB saves Weyl potential and Newtonian potential ~ Weyl potential but it's good to check after some extension model modifications.

Thanks,
Angela

You can output any variable using the built-in symbolic interpretation, e.g. see round box 28 at

https://camb.readthedocs.io/en/latest/ScalEqs.html

for an example.

Antony Lewis wrote: ↑

May 02 2020

You can output any variable using the built-in symbolic interpretation, e.g. see round box 28 at

https://camb.readthedocs.io/en/latest/ScalEqs.html

for an example.

thanks Antony! But I need rather a way to save things in Fortran CAMB -- so an expression of newtonian potential in terms of the equation.f90 transfer variables would be very helpful. If I want to save k^2*Psi_N, is it k*sigma/adotoa+k*sigmadot?

I don't recall off hand, but you can use the camb_fortran() function (see notebook) to get equivalent fortran for symbolic expressions.

Thanks! looks like it is