Theta Dependence of Meson Masses in the Small Mass Limit of the Massive Schwinger Model

Details Theta Dependence of Meson Masses in the Small Mass Limit of the Massive Schwinger Model Theta Dependence of Meson Masses in the Small Mass Limit of the Massive Schwinger Model

1997-12-03

arxiv.org/abs/hep-th/9712032v1

Phys.Rev.D57:5950-5954,1998

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, revtex, 1 ps figure

Scientific paper

10.1103/PhysRevD.57.5950

We present a continuum formulation for $\theta$-vacua in the massive Schwinger model on the light-front, where $\theta$ enters as a background electric field. The effective coupling of the external field is partially screened due to vacuum polarization processes. For small fermion masses and small $\theta$ we calculate the mass of the meson and find agreement with results from bosonization.

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