摘要
The theory of general relativity(GR)[1,2]has successfully built a relation between the geometry of spacetime and the energymomentum tensor of matter.Einstein has extensively quested for potential unified models of electromagnetism and gravity at a classical unified field theory and spent the last two decades of his
The theory of general relativity （GR） [1,2] has successfully built a relation between the geometry of spacetime and the energy- momentum tensor of matter. Einstein has extensively quested for potential unified models of electromagnetism and gravity at a classical unified field theory and spent the last two decades of his life to the search for a unified field theory. A scaling gauge symmetry [3] was proposed by Weyl for an attempt to characterize the electromagnetism. Kaluza and Klein [4,5] extended the GR to a five dimensional spacetime for trying to unify the electromagnetism, The relativistic Dirac spinor theory [6] has remarkably set up a correlation between the dimensions of spacetime and the degrees of freedom of Dirac spinor, that reflects a geometric coherence of spinor field at a profound level.
基金
supported in part by the National Natural Science Foundation of China(11690022,11475237)
the Strategic Priority Research Program of the Chinese Academy of Sciences(CAS)(XDB23030100)
the CAS Center for Excellence in Particle Physics(CCEPP)
