END USER LICENCE AGREEMENTEnd User License Agreement • January 13th, 2014
Contract Type FiledJanuary 13th, 2014Equation (2.9.1) is called the massless Dirac equation or the Weyl equation. This equation is the accepted mathematical model for a massless neutrino field. The two choices of sign in (2.9.1) give two versions of the massless Dirac equation which differ by time reversal. Thus, we have a pair of massless Dirac equations.