# Dirac and Majorana masses question

by llorgos
Tags: dirac, majorana, masses
 P: 21 Hi! How can I show that one fermion with Dirac mass is equivalent to two Majorana fermions which have equal masses and opposite phases, i.e., $$\psi_1^c = \psi_1, \,\,\, \psi_2^c = -\psi_2$$ ??? Thanks!