## sterile neutrino with different distribution

Use of Cobaya. camb, CLASS, cosmomc, compilers, etc.
Ravi Sharma
Posts: 4
Joined: October 02 2020
Affiliation: Institute of astropysics ,bangalore

### sterile neutrino with different distribution

Hello
I am searching for where is neutrino distribution is camb. I want to change it with a dat file or a polynomial fit of this dat file?
Please tell me where i can do this?
Thanking you
regards
Ravi kumar sharma

Antony Lewis
Posts: 1719
Joined: September 23 2004
Affiliation: University of Sussex
Contact:

### Re: sterile neutrino with different distribution

The current code uses the fact that it is Fermi-Dirac, so you'd need to modify the code to support a general distribution function, and switch off approximations that rely on analytic results for Fermi-Dirac.