On Lattice QCD with Many Flavors

Abstract

We discuss the confining and chiral-symmetry breaking properties of QCD with a large number of flavors $N_f$. In a Monte Carlo simulation of QCD with $N_f=16$ staggered fermions, we find clear evidence of a first order bulk phase transition which separates phases with broken and unbroken chiral symmetry. This is consistent with extrapolations of earlier studies with smaller $N_f$, and is also as expected from general arguments. Thus, even when the perturbative renormalization group flow has a new infrared stable fixed point near the origin, lattice artifacts induce chiral symmetry breaking, and presumably confinement, at sufficiently strong coupling.

10 pages, LaTeX, figures part of the LaTeX file

References in corpus (3)

• The Zero Temperature Chiral Phase Transition in SU(N) Gauge Theories
• Lattice QCD with 8 Light Quark Flavors
• First Evidence of $N_f$-Dependence in the QCD Interquark Potential

Cited by in corpus (42)

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• The physics of eight flavours
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• Lattice tests of beyond Standard Model dynamics
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• Twelve massless flavors and three colors below the conformal window
• Phase structure of SU(3) gauge theory with two flavors of symmetric-representation fermions
• Phase structure of lattice QCD for general number of flavors
• Lattice study of conformality in twelve-flavor QCD
• Paramagnetic effect of light quark loops on Chiral Symmetry Breaking
• Finite-size scaling tests for SU(3) lattice gauge theory with color sextet fermions
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• Investigating the critical properties of beyond-QCD theories using Monte Carlo Renormalization Group matching
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• Multicritical Microscopic Spectral Correlators of Hermitian and Complex Matrices
• Determining the conformal window: SU(2) gauge theory with N_f = 4, 6 and 10 fermion flavours
• Beyond Miransky Scaling
• Comments on lattice gauge theories with infrared-attractive fixed points
• Behavior of the S Parameter in the Crossover Region Between Walking and QCD-Like Regimes of an SU(N) Gauge Theory
• Scaling laws near the conformal window of many-flavor QCD
• Chiral properties of SU(3) sextet fermions
• Conformality in many-flavour lattice QCD at strong coupling
• Z Boson Propagator Correction in Technicolor Theories with ETC Effects Included
• The bulk transition of QCD with twelve flavors and the role of improvement
• A new scheme for the running coupling constant in gauge theories using Wilson loops
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• Thermodynamics of lattice QCD with 2 sextet quarks on N_t=8 lattices
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• The Yang-Mills gradient flow and SU(3) gauge theory with 12 massless fundamental fermions in a colour-twisted box
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• Lattice Monte-Carlo study of pre-conformal dynamics in strongly flavoured QCD in the light of the chiral phase transition at finite temperature
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• The Schrödinger functional running coupling with staggered fermions and its application to many flavor QCD
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• QCD-like technicolor on the lattice
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• Conformal phase transition in QCD like theories and beyond