As I've just been posting a reply concerning RECFAST, I thought it may be interesting for some of you to hear that cmbeasy ships with a completly rewritten RECFAST-type recombination that can be used to study a varying fine structure constant. It is as robust as possible, however the allowed change of alpha at recombination should still not exceed 30-40% or so (but that's anyhow excluded by the data).
I was actually a bit surprised that no-one picked it up (I implemented it, shipped it,but never used it for an article until recently).
I would have guessed that someone seizes the opportunity :-)
A little documentation on the class is online at:
http://www.thphys.uni-heidelberg.de/~do ... Alpha.html
varying fine structure constant in CMBEASY
1 post • Page 1 of 1