Effective mixing between clouds of different species of particles that are massless, or nearly massless
arXiv:1702.03013
Abstract
In collisions of intense beams, or clouds, coherent dynamics open the way for fast transformations of light highly relativistic species into one another. Possible applications are suggested for situations, each involving two out of three of: photons, neutrinos, or gravitons.
8 pages, 4 figuresgreatly expanded and more limited in scope