Ginzburg - Landau equation from SU(2) gauge field theory

Details Ginzburg - Landau equation from SU(2) gauge field theory Ginzburg - Landau equation from SU(2) gauge field theory

2002-10-30

arxiv.org/abs/hep-th/0210287v1

Mod.Phys.Lett. A18 (2003) 955-966

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, LATEX

Scientific paper

10.1142/S0217732303010776

The dual superconductor picture of the QCD vacuum is thought to describe various aspects of the strong interaction including confinement. Ordinary superconductivity is described by the Ginzburg-Landau (GL) equation. In the present work we show that it is possible to arrive at a GL-like equation from pure SU(2) gauge theory. This is accomplished by using Abelian projection to split the SU(2) gauge fields into an Abelian subgroup and its coset. The two gauge field components of the coset part act as the effective, complex, scalar field of the GL equation. The Abelian part of the SU(2) gauge field is then analogous to the electromagnetic potential in the GL equation. An important aspect of the dual superconducting model is for the GL Lagrangian to have a spontaneous symmetry breaking potential, and the existence of Nielsen-Olesen flux tube solutions. Both of these require a tachyonic mass for the effective scalar field. Such a tachyonic mass term is obtained from the condensation of ghost fields.

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