First value for k is not always the same

Use of Healpix, camb, CLASS, cosmomc, compilers, etc.
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Dournac Fabien
Posts: 7
Joined: May 18 2019
Affiliation: IRAP
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First value for k is not always the same

Post by Dournac Fabien » June 17 2019

Hello,

I am generating matter power spectrum with different parameters ([math] (using CAMB-1.0.4).

At the total, I have 300 output files test_matterpower*.dat.

and What I don't understand is that the first value "k/h" extract from these files is not always the same.

For a majoity of files, I get for the first value :

Code: Select all

k/h=0.527815E-05
but for a few files, I get a different starting value : how to explain this ? Is it normal ?

How to force it to make all the same first values for every output file ?

Thanks

Antony Lewis
Posts: 1493
Joined: September 23 2004
Affiliation: University of Sussex
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Re: First value for k is not always the same

Post by Antony Lewis » June 17 2019

You can set transfer_interp_matterpower=T, otherwise it uses the actual internal sampling.

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