Computers and software • cobaya, CLASS: Requesting z_rec -> zstar
Hi! I want to use the SOLikeT cross-correlation likelihood in cobaya, but I am running with CLASS rather than CAMB. This seems to be a problem because the likelihood requests zstar, a parameter which...
View ArticleComputers and software • Re: cobaya, CLASS: Requesting z_rec -> zstar
Well, a search-and-replace for zstar->z_rec (and similarly for omch2->omega_cdm, ombh2->omega_b in the CCL wrapper) seems to have done the trick. Seems somewhat inelegant, is there a way to...
View ArticleCosmoCoffee • Clarification on the Matter Power Spectrum Dimensions in CAMB
I had a couple of questions regarding the matter power spectrum calculations in CAMB, particularly involving the use of get_linear_matter_power_spectrum and get_matter_power_interpolator.In the...
View ArticleComputers and software • Cobaya error: “Theory external is not a Theory...
Hi everyone,I’m trying to use Cobaya with a custom theory class. I’ve defined a class BulkViscosityModel inside bulkviscosity/theory.py, and I reference it in run.yaml like this:Code: theory:...
View ArticleComputers and software • Re: Cobaya error: “Theory external is not a Theory...
I don't think you need "external" - if it's a python package can load it directly (may need package_path if not in path)."external" is if you want to pass a loaded python class reference via dict in...
View ArticleComputers and software • Re: GetDist: H0 and sigma8 as derived parameters
GetDist doesn't know anything about cosmology, so you'd have to compute the sigma8 values externally, e.g. by looping over the chain parameters and computing it.Cobaya could do this by importance...
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View ArticleComputers and software • CAMB: get specific Newtonian-gauge power spectrum
I am trying to reproduce the power spectrum which is the (solid) red line from Fig. 1 of https://arxiv.org/pdf/1105.5292I have managed to get CAMB to return the dashed black line behavior from the...
View ArticleComputers and software • Re: CAMB: get specific Newtonian-gauge power spectrum
Box 32 of the example notebook shows how to construct things in different gauges as a function of k and timehttps://camb.readthedocs.io/en/latest/CAMBdemo.html(don't think there's a way to go directly...
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Computers and software • Cobaya error with Planck likelihoods
Hello!I'm having trouble running the Planck data. I created a .yaml file using cobaya-cosmo-generator, selecting theory camb and the dataset Planck 2018 CMB-marginalized lensing only, where I use the...
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