Equations for massless and massive spin-1/2 particles with varying speed and neutrino in matter
Equations for massless and massive spin-1/2 particles with varying speed and neutrino in matter
The modified Dirac equations describing massless and massive spin-1/2 particles violating the Lorentz invariance are considered. The equation for massless fermions with varying speed is formulated in the 16-component first-order form. The projection matrix, which is the density matrix, extracting solutions to the equation has been obtained. Exact solutions to …