Isospin Breaking Effects in the 2-Flavor Schwinger Model

Abstract

The automatic fine-tuning of isospin breaking effects by conformal coalescence found by Georgi in the 2-flavor Schwinger model is studied. The analytical results obtained for the bosonic correlators are elaborated and the mass splitting parameter in leading order determined. Numerical investigation of meson mass splitting confirms the exponential suppression of symmetry breaking effects even for mass differences $\delta m$ near the fermion mass $m_f$.

arXiv comment7 pages. Proceedings of the 39th International Symposium on Lattice Field Theory, LATTICE2022 8th-13th August, 2022, University of Bonn, Germany. Matches PoS version

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Cited by in corpus (1)

• Chiral and isospin breaking in the two-flavor Schwinger Model