Essence of Charge and Spin with General Covariant Dirac Equations

Abstract In the framework of the general covariant field-theoretical approach, new representations of natural Time and its duality give an explanation for the existence of nuclei and open up quite new possibilities to puzzle out their internal structure if it is explained why charge and spin exist. To solve this problem, general covariant Dirac equations are established, which connect the essence of spin with gravity and the essence of charge with natural Time. Thus, the general covariant Dirac equations provide a reliable basis for the theory of matter at the fundamental field-theoretical level and an explanation of the phenomena associated with the existence of nuclei.