And that is available here http://arxiv.org/abs/1503.01025 Let me now consider a stupid oversimplified scenario. Imagine a particle with the same charge as an electron existed, but at some (perhaps different) fixed rest-mass M. Assume this particle is sitting in a photon radiation blackbody bath at large temperature T. Use units with G=c=kB=hbar=alpha=1. Our particle would be subject to a fluctuating acceleration of order of magnitude a=T^P M^(-Q) caused by Compton scatterings, where the exponents P and Q are some constants. But this acceleration a in turn would cause an effective temperature T of order a, causing a new a, and so on. My question is: could this process "run away" causing exponential or super-exponential blowup of a? At least if treated as naively as I have. Answer: apparently not. I think in the ultrarelativistic asymptotic regime that the effective exponent P=-1<0 so we would not get such a problem; the universe is saved. -- Warren D. Smith http://RangeVoting.org <-- add your endorsement (by clicking "endorse" as 1st step)