Finite-size scaling of lattice data favors a merged fixed point governing the strong-to-weak coupling transition in SU(3) with eight fundamental flavors, suggesting this system sits at the opening of the conformal window.
Origin of fermion masses without spontaneous symmetry breaking
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abstract
Using a simple three dimensional lattice four-fermion model we argue that massless fermions can become massive due to interactions without the need for any spontaneous symmetry breaking. Using large scale Monte Carlo calculations within our model, we show that this non-traditional mass generation mechanism occurs at a second order quantum critical point that separates phases with the same symmetries. Universality then suggests that the new origin for the fermion mass should be of wide interest.
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Investigating SU(3) with Nf=8 fundamental fermions at strong renormalized coupling
Finite-size scaling of lattice data favors a merged fixed point governing the strong-to-weak coupling transition in SU(3) with eight fundamental flavors, suggesting this system sits at the opening of the conformal window.