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Topological approach to examine the singularity of the axial-vector current in an Abelian gauge field theory (QED)
axial-vector current Ward-Takahashi identity anomaly Atiyah-Singer index theorem
2009/8/13
A topological way to distinguish divergences of the Abelian axial-vector current in quantum field theory is proposed. By using the properties of the Atiyah-Singer index theorem, the non-trivial Jacobi...