Mildly Flavoring Domain Walls in Sp(N) SQCD

Abstract

We consider supersymmetric domain walls of four-dimensional $\mathcal{N}=1$ $Sp(N)$ SQCD with $F=N+1$ and $F=N+2$ flavors. First, we study numerically the differential equations defining the walls, classifying the solutions. When $F=N+2$, in the special case of the parity-invariant walls, the naive analysis does not provide all the expected solutions. We show that an infinitesimal deformation of the differential equations sheds some light on this issue. Second, we discuss the $3d$ $\mathcal{N}=1$ Chern-Simons-matter theories that should describe the effective dynamics on the walls. These proposals pass various tests, including dualities and matching of the vacua of the massive $3d$ theory with the $4d$ analysis. However, for $F=N+2$, the semiclassical analysis of the vacua is only partially successful, suggesting that yet-to-be-understood strong coupling phenomena are into play in our $3d$ $\mathcal{N}=1$ gauge theories.

arXiv comment29 pages, many figures. V2: various changes in Sec. 3. V3: JHEP version

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• Mildly Flavoring Domain Walls in Sp(N) SQCD