Long-distance properties of frozen U(1) Higgs and axially U(1)-gauged four-Fermi models in $1+1$ dimensions

Details Long-distance properties of frozen U(1) Higgs and axially U(1)-gauged four-Fermi models in $1+1$ dimensions Long-distance properties of frozen U(1) Higgs and axially U(1)-gauged four-Fermi models in $1+1$ dimensions

1993-08-13

arxiv.org/abs/hep-th/9308064v1

Physics

High Energy Physics

High Energy Physics - Theory

43 pages, Latex file (16 figures not included in the text) YITP/U-93-15

Scientific paper

We study the long-distance relevance of vortices (instantons) in an $N$-component axially U(1)-gauged four-Fermi theory in $1+1$ dimensions, in which a naive use of $1/N$ expansion predicts the dynamical Higgs phenomenon. Its general effective lagrangian is found to be a frozen U(1) Higgs model with the gauge-field mass term proportional to an anomaly parameter ($b$). The dual-transformed versions of the effective theory are represented by sine-Gordon systems and recursion-relation analyses are performed. The results suggest that in the gauge-invariant scheme ($b=0$) vortices are always relevant at long distances, while in non-invariant schemes ($b>0$) there exists a critical $N$ above which the long-distance behavior is dominated by a free massless scalar field.

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