Do boson anihilate? This question was raised in my mind by a post on the Strings, Branes et al. board that had a link to a text describing gravitons anihilating and producing graviphotons. Aside from what you think of this model, what is the skinny on bosons anihilating? Photons don't, AFAIK; do gluons? What about those massive weakons? Is it a wave function thing like the exclusion principle?