Abstract
We revisit the study of singular points in the Coulomb branch of \( \mathcal{N}=2 \) SQCD in four dimensions with gauge group SU(N). For certain choices of the mass parameters these vacua are not lifted by a mass term for the chiral multiplet in the adjoint representation. By using recent results about the M5 brane description of \( \mathcal{N}=1 \) theories we study the resulting vacua and argue that the low-energy effective theory has a simple Lagrangian description involving a free chiral multiplet in the adjoint representation of the flavor symmetry group, a system somewhat reminiscent of the standard low-energy pion description of the real-world QCD. This fact is quite remarkable in view of the fact that the underlying \( \mathcal{N}=2 \) SCFT (the Argyres-Douglas systems) are strongly-coupled non-local theories of quarks and monopoles.
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Bolognesi, S., Giacomelli, S. & Konishi, K. \( \mathcal{N}=2 \) Argyres-Douglas theories, \( \mathcal{N}=1 \) SQCD and Seiberg duality. J. High Energ. Phys. 2015, 131 (2015). https://doi.org/10.1007/JHEP08(2015)131
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DOI: https://doi.org/10.1007/JHEP08(2015)131