I'm sure I mentioned this before somewhere on the blog... yup, here:
It's heating up
Some chaps claimed that all the old photon-photon scattering calculations were wrong. It looked to me like they'd written "infinity - infinity =0" at some point. And here's the response! From the asbtract alone these guys seem to be better informed than the new radicals.
http://xxx.soton.ac.uk/abs/1111.6126.
I feel a comment approaching.....
