Conformal window of SU(N) gauge theories with fermions in higher dimensional representations

By D. Dietrich, Francesco Sannino. 2006

327 citations recorded by the source corpus.

We study the phase diagram as a function of the number of colors and flavors of asymptotically free nonsupersymmetric theories with matter in higher-dimensional representations of arbitrary SU(N) gauge groups. Since matter in higher-dimensional representations screens more than in the fundamental a general feature is that a lower number of flavors is needed to achieve a near-conformal theory.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/a3e005cddd7ee63640ef97fb22f47ee72505ebab

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In Nuclear and High Energy Physics

Citations in the corpus

Self-Interacting Dark Matter from a Non-Abelian Hidden Sector (2014, background): “The theory is expected to confine at low energies at a scale Λ, where the gauge coupling becomes strong enough that perturbation theory breaks down [69–75].”
Higher representations on the lattice: numerical simulations. SU(2) with adjoint fermions (2008, background): “Theories with two Dirac fermions in the two–index symmetric representation and small number of colors (N = 2, 3) are currently under scrutiny as viable candidates for strongly– interacting BSM candidates [15, 16, 17].”
Hyperscaling relations in mass-deformed conformal gauge theories (2010, unknown): “Another strategy, which is adopted in this paper, is to first identify theories within the conformal window, and then approach the boundary of the window using the available information on the color-flavor phase diagram [2, 3, 6, 11].”
Fundamental composite dynamics: A review (2020, methodology): “the number of underlying fermionic matter), the symmetry might not break at all because the theory can develop large distance conformality, as discussed in [19] for fermions in two-index representations, in [20] for a universal classification of SU(N) gauge theories and their applications to Technic”
UV completions of partial compositeness: the case for a SU(4) gauge group (2014, unknown): “In particular, in [26, 27], some higher dimensional irreps have been studied that will also appear in the present work.”
Supersymmetry inspired QCD beta function (2007, methodology): “The result is simple and we compare it with the phase diagram presented in [4, 5, 6] obtained using the truncated Schwinger-Dyson approximation also referred as ladder approximation in [7, 8].”
Holographic models for QCD in the Veneziano limit (2011, result): “, [67]).”