Absence of higher order corrections to the non-Abelian topological mass term

Details Absence of higher order corrections to the non-Abelian topological mass term Absence of higher order corrections to the non-Abelian topological mass term

2000-12-11

arxiv.org/abs/hep-th/0012087v2

Phys.Rev. D63 (2001) 085015

Physics

High Energy Physics

High Energy Physics - Theory

30 pages, 8 figures (final version to appear in Phys. Rev. D)

Scientific paper

10.1103/PhysRevD.63.085015

We study the Yang-Mills-Chern-Simons theory systematically in an effort to generalize the Coleman-Hill result to the non-Abelian case. We show that, while the Chern-Simons coefficient is in general gauge dependent in a non-Abelian theory, it takes on a physical meaning in the axial gauge. Using the non-Abelian Ward identities as well as the analyticity of the amplitudes in the momentum variables, we show that, in the axial gauge, the Chern-Simons coefficient does not receive any quantum correction beyond one loop. This allows us to deduce that the ratio ${4\pi m\over g^{2}}$ is unrenormalized, in a non-Abelian theory, beyond one loop in any infrared safe gauge. This is the appropriate generalization of the Coleman-Hill result to non-Abelian theories. Various other interesting properties of the theory are also discussed.

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