CosmoCoffee Forum Index CosmoCoffee

 FAQFAQ   SearchSearch  MemberlistSmartFeed   MemberlistMemberlist    RegisterRegister 
   ProfileProfile   Log inLog in 
Arxiv New Filter | Bookmarks & clubs | Arxiv ref/author:

CosmoMC June 2016 release: Issue regarding converged statistics
Post new topic   Reply to topic    CosmoCoffee Forum Index -> Computers and software
View previous topic :: View next topic  
Author Message
Luke Hart

Joined: 13 Jul 2015
Posts: 38
Affiliation: University of Manchester

PostPosted: April 07 2017  Reply with quote


I am currently undergoing an analysis of new parameters which have been added to CosmoRec, I have configured these parameters to successfully work in CosmoRec's batch mode and also communicate successfully to CAMB. From CAMB, these parameters are then communicated to CosmoMC and everything seemed to be working.

However, I have been trying to recreate the values in a published paper on the arxiv. The results of all the parameters are consistent however my new parameter x has an error which is almost exactly 10 times smaller than the literature. This is the only discrepancy from the results and I've checked that the likelihoods are similar. I could understand slight changes in parameter values due to nuisance parameters or even the updates in CosmoRec since then, however as I have mentioned,

\sigma_x \sim 0.1\sigma_x^{\rm paper}

I have tried recreating PLANCK 2015's results for the two photon decay rate A2s1s as well and unfortunately that is very consistent as well; yet the error is ten times lower again. In this analysis, I basically replaced x by A2s1s. The communication through CosmoRec->CAMB->CosmoMC is identical.

Any ideas?

Update: This issue has been solved but has sparked a new question which I want to discuss in
Back to top
View user's profile  
Display posts from previous:   
Post new topic   Reply to topic    CosmoCoffee Forum Index -> Computers and software All times are GMT + 5 Hours
Page 1 of 1

Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001, 2005 phpBB Group. Sponsored by WordWeb online dictionary and dictionary software.