Quantum effects of a massive 3-form coupled to a Dirac field

Details Quantum effects of a massive 3-form coupled to a Dirac field Quantum effects of a massive 3-form coupled to a Dirac field

2004-02-13

arxiv.org/abs/hep-th/0402104v2

Phys.Rev. D69 (2004) 105005

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, Revtex, no figures; in print on Phys.Rev.D; added new references

Scientific paper

10.1103/PhysRevD.69.105005

We consider the coupling of A_{\mu\nu\rho} to the generic current of matter field, later identified with the spin density current of a Dirac field. In fact, one of the objectives of this paper is to investigate the impact of the quantum fluctuations of A_{\mu\nu\rho} on the effective dynamics of the spinor field. The consistency of the field equations, even at the classical level, requires the introduction of a mass term for A_{\mu\nu\rho}. In this case, the Casimir vacuum pressure includes a contribution that is explicitly dependent on the mass of A_{\mu\nu\rho} and leads us to conclude that the mass term plays the same role as the infrared cutoff needed to regularize the finite volume partition functional previously calculated in the massless case. Remarkably, even in the presence of a mass term, A_{\mu\nu\rho} contains a mixture of massless and massive spin-0 fields so that the resulting equation is still gauge invariant. This is yet another peculiar, but physically relevant property of A_{\mu\nu\rho} since it is reflected in the effective dynamics of the spinor fields and confirms the confining property of A_{\mu\nu\rho} already expected from the earlier calculation of the Wilson loop.

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