Simulation of spin-1/2 dynamics induced by laser field

Dynamics of a charged spin-1/2 particle moving in a strong laser modelled by a monochromatic electromagnetic plane wave is studied. The full Heaviside–Lorentz interaction of charge with a high intensity radiation is taken into account without using of the dipole approximation, employing the exact solution to the classical equations of motion for charge. The effective Pauli equation with relativistic corrections for spin is derived. Based on the numeric studies of the derived equation the resonance character of the spin-flip process is predicted for a certain values of intensity and polarisation of the laser.