Affiliation:
1. European Organization for Nuclear Research
2. Durham University
Abstract
We study the complete moduli space of vacua of 3d
\mathcal{N}=4𝒩=4U(N)U(N)
SQCD theories with N_fNf
fundamentals, building on the algebraic description of the Coulomb
branch, and deduce the low energy physics in any vacuum from the local
geometry of the moduli space. We confirm previous claims for good and
ugly SQCD theories, and show that bad theories flow to the same
interacting fixed points as good theories with additional free twisted
hypermultiplets. A Seiberg-like duality proposed for bad theories with
N \le N_f \le 2N-2N≤Nf≤2N−2
is ruled out: the spaces of vacua of the putative dual theories are
different. However such bad theories have a distinguished vacuum, which
preserves all the global symmetries, whose infrared physics is that of
the proposed dual. We finally explain previous results on sphere
partition functions and elucidate the relation between the UV and IR
RR-symmetry
in this symmetric vacuum.
Subject
General Physics and Astronomy
Cited by
35 articles.
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