Toward TeV Conformality

Abstract

We study the chiral condensate $textlessbarpsi psitextgreater$ for an SU(3) gauge theory with $N_f$ massless Dirac fermions in the fundamental representation when $N_f$ is increased from 2 to 6. For $N_f=2$, our lattice simulations of $textlessbarpsi psi textgreater/Ftextasciicircum3$, where $F$ is the Nambu-Goldstone-boson decay constant, agree with the measured QCD value. For $N_f = 6$, this ratio shows significant enhancement, presaging an even larger enhancement anticipated as $N_f$ increases further, toward the critical value for transition from confinement to infrared conformality.

Publication
Phys.Rev.Lett.

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