Abstract
We initiate the continuum description of a non-perturbative 5d lattice Yang–Mills model with 4d boundaries using the ε-expansion. In its simplest version classically the bulk has an SU(2) gauge symmetry and on the boundary there is an Abelian–Higgs system with zero scalar potential. In part I we compute the Renormalization Group flows and related quantities in a limit where the boundary decouples from the bulk.
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