Is there an elegant proof of the existence of Majorana spinors?
No. Because they don't exist. The neutrino is not a Majorana spinor. It's a Weyl spinor. See Dirac, Majorana and Weyl fermions by Palash Pal. He said “the neutrinos had to be uncharged because of conservation of electric charge,...Malcolm John Perry (born 13 November 1951) is a British theoretical physicist and professor of theoretical physics at the University of Cambridge. His research mainly concerns general relativity, supergravity and string theory.
== Biography ==
Perry attended King Edward's School, Birmingham before reading physics at St John's College, Oxford. He was a graduate student at King's College, Cambridge, under the supervision of Stephen Hawking. He obtained his doctorate in 1978 with a thesis on the quantum mechanics of black holes. In these early years, he worked on several very influential papers on...
