Torsion as Electromagnetism and Spin
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We show that it is possible to formulate the classical Einstein-Maxwell-Dirac theory of spinors interacting with the gravitational and electromagnetic fields as the Einstein-Cartan-Kibble-Sciama theory with the Ricci scalar of the traceless torsion, describing gravity, and the torsion trace acting as the electromagnetic potential.
KeywordsUnified field theory Einstein-Cartan gravity Geometric electromagnetism Torsion
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