Threefold Family of Charged Spin-1/2 Dirac Bubbles
Abstract
We extend Dirac's `extensible model of the electron' to include spin and family. U(1)e.m. charge conservation on the bubble is translated into a secondary U(1)g world-manifold gauge principle. Reflecting the secondary magnetic monopole configuration on spatial S2, the harmonic excitations may furnish half integer SU(2)spin U(1)g representations. Our spin--1/2 `electron' is described by four world-manifold scalar fields. Its three varieties are associated with different minima of the (6th--order) surface-tension scalar potential.
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