Computers and software • CAMB: matter power spectrum from interpolator and transfer function

Hi, I am using CAMB version 1.5.8 and seeing small differences in the matter power spectrum obtained from transfer function `get_matter_transfer_data` (using the formula P_k = A_s*(k/pivot_scalar)^ns*transfer_fn^2)) and `get_matter_power_interpolator`. The difference is on the order of ~1% regardless of the wavenumber. Is this expected or did I miss something?

The code snippet can be found here:
https://gist.github.com/jeonggyukim/73c0006bcbf96436b5efcd32d59647d8

Statistics: Posted by Jeong-Gyu Kim — October 04 2024

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