Fermion-induced quantum action of vortex systems

Details Fermion-induced quantum action of vortex systems Fermion-induced quantum action of vortex systems

2002-05-30

arxiv.org/abs/hep-th/0205304v1

Nucl.Phys. B646 (2002) 158-180

Physics

High Energy Physics

High Energy Physics - Theory

21 pages, 8 figures

Scientific paper

10.1016/S0550-3213(02)00835-0

The quantum action generated by fermions which are minimally coupled to abelian vortex background fields is studied in D=2+1 and D=3+1 Euclidean dimensions. We present a detailed analysis of single- and binary-vortex configurations using the recently developed method of worldline numerics. The dependence of the fermion-induced quantum action on the fermion mass and the magnetic fluxes carried by the vortices is studied, and the binary-vortex interaction is computed. Additionally, we discuss the chiral condensate generated from a dilute gas of vortices in the intermediate fermion mass range for the case D=3+1. As a byproduct, our findings provide insight into the validity limits of the derivative expansion, which is the standard analytical approach to inhomogeneous backgrounds.

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