Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-11-10
Physics
High Energy Physics
High Energy Physics - Theory
13 pages
Scientific paper
Soon after the Yang-Mills work, the gauge invariance became one of the basic principles in the elementary particles theory. The gauge invariance idea is that Lagrangian has to be invariant not only with respect to the coordinates transformations corresponding to the Lorentz group (external symmetry). It is supposed that Lagrangian has also to be invariant with respect to wave functions (not coordinates) transformations corresponding to some additional groups (so-called "internal symmetry groups"). Useful though this idea is, there is no satisfactory understanding of the above additional symmetries origin, and the gauge invariance is considered as an auxiliary theoretical hypotheses. We propose a new, topological interpretation of the basic quantum mechanical equation -- the Dirac equation, and within the framework of this interpretation the notions of internal symmetry and gauge invariance bear a simple geometrical meaning and are natural consequences of the basic principles of the proposed geometrical description. According to this interpretation the Dirac equation proves to be the group-theoretical relation that accounts for the symmetry properties of a specific 4-manifold -- localized microscopic deviation of the space-time geometry from the Euclidean one. This manifold covering space plays the role of the internal space, and the covering space automorphism group plays the role of the gauge group.
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