Definition of electromagnetic local spatial densities for composite spin-1/2 systems

A new definition of the electromagnetic spatial densities for a spin-1/2 system is proposed and worked out in the zero average momentum frame and in moving frames. The obtained results are compared with the traditional definition of the densities in terms of the three-dimensional Fourier transforms of the electromagnetic form factors in the Breit frame.

Automated summary

This paper proposes and computes a new definition of electromagnetic spatial densities for a spin-1/2 system. The results obtained are compared with the traditional definition based on the three-dimensional Fourier transforms of the electromagnetic form factors in the Breit frame.