Anomaly-Induced Magnetic Screening in 2+1 dimensional QED at Finite Density

Details Anomaly-Induced Magnetic Screening in 2+1 dimensional QED at Finite Density Anomaly-Induced Magnetic Screening in 2+1 dimensional QED at Finite Density

1993-03-19

arxiv.org/abs/hep-th/9303113v2

Phys.Rev.Lett. 71 (1993) 1303-1306

Physics

High Energy Physics

High Energy Physics - Theory

8 pages, DFTT-93-10 [ Eq.(15) and (16) were scrambled in previous version ]

Scientific paper

10.1103/PhysRevLett.71.1303

We show that in 2+1 dimensional Quantum Electrodynamics an external magnetic field applied to a finite density of massless fermions is screened, due to a $2+1$-dimensional realization of the underlying $2$-dimensional axial anomaly of the space components of the electric current. This is shown to imply screening of the magnetic field, i.e., the Meissner effect. We discuss the physical implications of this result.

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