A holographic model treats QCD(Adj) instanton condensation and adjoint-fermion chiral condensation as BF bound violations, and predicts an order-of-magnitude scale gap when fundamentals are added.
Gradient Flow Coupling in the SU(2) gauge theory with two adjoint fermions
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abstract
We study SU(2) gauge theory with two fermion flavors in the adjoint representation. Using a clover improved HEX smeared action and the gradient flow running coupling allows us to simulate with larger lattice size than before. We find an infrared fixed point after a continuum extrapolation in the range $4.5 \lesssim g^{*2} \lesssim 5$. We also measure the mass anomalous dimension and find the value $ 0.25 \lesssim \gamma^* \lesssim 0.28 $ at the fixed point.
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Holography for QCD(Adj) and QCD(Adj)+F
A holographic model treats QCD(Adj) instanton condensation and adjoint-fermion chiral condensation as BF bound violations, and predicts an order-of-magnitude scale gap when fundamentals are added.