The existence of massless charged particles (electrons and positrons) in the description of the pulsar magnetosphere description leads to the appearance of two phases for each species. In the dynamical phase (DP), the particles move like photons with the speed of light. The static phase (SP), in which the massless particles move with a speed less than that of light, can exist only inside the capture region (C-region). Inside the C-region (E, H) = 0 or E2 < H2, and the Lorentz force acting upon the particles of SP vanishes. Inside the accelerating region (A-region), where (E,H) ≠ 0 or E2 ≥ H2 , only the DP can exist.