Dynamical Rearrangement of Theta Parameter in Presence of Mixed Chern-Simons Term

Details Dynamical Rearrangement of Theta Parameter in Presence of Mixed Chern-Simons Term Dynamical Rearrangement of Theta Parameter in Presence of Mixed Chern-Simons Term

2008-03-31

arxiv.org/abs/0803.4380v2

Phys.Rev.D78:085021,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages (v1); Comments and references added, version to appear in Physical Review D (v2)

Scientific paper

10.1103/PhysRevD.78.085021

We study the five-dimensional SU(3)_c x U(1)_C gauge theory on the orbifold S^1/Z_2 with a mixed Chern-Simons term. We particularly pay attention to the realization of the dynamical rearrangement of the theta parameter for SU(3)_c. It is shown that the physics remains invariant under a large gauge transformation which even changes the action, completely removing the theta parameter, because of the Hosotani mechanism for the U(1)_C gauge interactions. In other words, we show that the theta parameter can be regarded as a boundary condition for the orbifolding in light of the dynamical rearrangement.

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