Computers and software • Clarification on Perturbation Variables in CAMB's...
Hello everyone,I'm currently studying CAMB's perturbation equations (in equations.f90) and have a few clarifying questions:1. The Fractional Density Perturbations:What exactly are the fractional...
View ArticleComputers and software • Re: Clarification on Perturbation Variables in...
The CAMB notes define most thingshttps://cosmologist.info/notes/CAMB.pdfThe transfer function is just a definition (including Lambda would be odd as it would change the order of magnitude of the power...
View ArticleComputers and software • GetParams with same output as SampleDict
Hi, I have notice that the function GetParams from the GetDist library only returns the values that have been simulated in a MCMC, but not those which had been added as priors with no variations. For...
View ArticleComputers and software • Re: GetParams with same output as SampleDict
Can try MCSamples.ranges.fixedValueDict()Statistics: Posted by Antony Lewis — March 27 2025
View ArticleComputers and software • The MCMC does not start properly.
camb can be executed correctly after modification, but when running the chain, an error is reported, MCMC.f90: Couldn't start after 1000 tries - check starting ranges, I don't know what the reason...
View ArticleComputers and software • Re: The MCMC does not start properly.
Can try building and running with Debug option.If you ran with Cobaya instead, you could use --debug option to see output of parameters being tried and what the likelihood being returned...
View ArticleCosmoCoffee • Re: Can not register, username problem
Are you using "Ronaldo Batista" as the username?Statistics: Posted by Antony Lewis — March 31 2025
View Article