Does planar/large number of colors ${\cal N}=4$ SYM contain bound states at strong or weak coupling? Are there bound states in the non-planar limit at strong or weak coupling?
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4${\cal N}=4$ Super-Yang-Mills is scale-invariant (link to pdf, section 1.2), so this question is related: Why are there no particles in conformal theories? – Chiral Anomaly Aug 26 '21 at 03:22