London's Equation from Abelian Projection

Details London's Equation from Abelian Projection London's Equation from Abelian Projection

2002-04-05

arxiv.org/abs/hep-th/0204053v1

Phys.Rev. D65 (2002) 125007

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, LATEX

Scientific paper

10.1103/PhysRevD.65.125007

Confinement in non-Abelian gauge theories, such as QCD, is often explained using an analogy to type II superconductivity. In this analogy the existence of the ``Meissner'' effect for quarks with respect to the QCD vacuum is an important element. Here we show that using the ideas of Abelian projection it is possible to arrive at an effective London equation from a non-Abelian gauge theory. (London's equation gave a phenomenological description of the Meissner effect prior to the Ginzburg-Landau or BCS theory of superconductors). The Abelian projected gauge field acts as the E&M field in normal superconductivity, while the remaining non-Abelian components form a gluon condensate which is described via an effective scalar field. This effective scalar field plays a role similar to the scalar field in Ginzburg-Landau theory.

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