Unified Electro-Gravity (UEG) Theory of the Electron’s Spin and Spin-Magnetic Moment, in the Presence of an External Magnetic Field

The Unified Electro-Gravity (UEG) theory, which has been recently introduced as a modified gravitational theory to self-consistently model an electron as well as successfully predict the fine-structure constant, is now extended for a complete modeling of the electron's spin and spin-magnetic moment in the presence of an externally applied magnetic field. The electro-gravitational field, which originally supported the freely-spinning electron, needs to be adjusted in order to balance the additional force due to the external magnetic field, requiring proper adjustment of the spin-radius. The consequent change of the electron's spin-frequency, or equivalently of the electron's quantum-wave frequency, is shown to be equal to the frequency-change predicted from a conventional quantum theory, associated with the energy-change of the electron's spin-magnetic moment due to the external magnetic field. This is a significant result, further supporting the UEG theory as the fundamental basis for a self-consistent electron structure, and as the physical origin of all quantum concepts. The presentation would include: (1) a general-relativistic formulation of the UEG theory; (2) derivations of the electron's free-spin frequency and its change due to the external magnetic field; and (3) discussion of the nature of interaction of the electron's spin-magnetic moment with an external magnetic field in a Stern-Gerlach experiment, in relation to the new theory.