I am working on a modified Boltzmann hierarchy for neutrinos. Therefor, I would like to know whether CAMB uses a line of sight approach to solve for the higher neutrino moments as well (I know that it uses l.o.s. for the photon hierarchy). In case it does so, where can I find the source term that is needed to do the integration over the spherical Bessel functions? I could not find it anywhere... Or is the neutrino hierarchy solved by brute force?
Thanks,
Isabel
Line of sight for neutrinos?
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Re: Line of sight for neutrinos?
It only uses the Bolzmann hierarchy for neutrinos (since we are not currently trying to observe the neutrino anisotropy spectrum!).