Lattice study of the conformal window in QCD-like theories.

  title={Lattice study of the conformal window in QCD-like theories.},
  author={T. Appelquist and G. Fleming and E. Neil},
  journal={Physical review letters},
  volume={100 17},
We study the extent of the conformal window for an SU(3) gauge theory with N{f} Dirac fermions in the fundamental representation. We present lattice evidence for 12<or=N{f}<or=16 that the infrared behavior is governed by a fixed point, while confinement and chiral symmetry breaking are present for N{f}<or=8. 

Figures and Topics from this paper

Exploring the conformal window: SU(2) gauge theory on the lattice
We study the SU(2) gauge theory on the lattice with different numbers of fermions in the fundamental representation of the gauge group to explore the gauge theory phase diagram. We find evidence forExpand
Study of the scaling properties in SU(2) gauge theory with eight flavors
We present our preliminary study of the SU(2) gauge theory with 8 flavors of fermions in fundamental representation. This theory could be a candidate of the gauge theory with conformal fixed point.Expand
Strong dynamics, composite Higgs and the conformal window
We review recent progress in the lattice investigations of near-conformal non-abelian gauge theories relevant for dynamical symmetry breaking and model building of composite Higgs models. TheExpand
Exploration of SU(N(c)) gauge theory with many Wilson fermions at strong coupling
We explore aspects of the phase structure of SU(2) and SU(3) lattice gauge theories at strong coupling with many flavors N{sub f} of Wilson fermions in the fundamental representation. TheExpand
Lattice studies of quantum chromodynamics-like theories with many fermionic degrees of freedom
  • T. DeGrand
  • Physics, Medicine
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
  • 2011
An elementary introduction to the study of gauge theories coupled to fermions with many degrees of freedom, candidates for non-perturbative extensions of the Higgs sector of the standard model. Expand
Conformal phase transition: QCD like theories with a large number of fermion flavors and all that
The notion of the conformal phase transiton (CPhT) is discussed. As its realization, the dynamics with an infrared stable fixed point in the conformal window in QCD like theories with a relativelyExpand
Strong conformal dynamics at the LHC and on the lattice
Conformal technicolor is a paradigm for new physics at the LHC that may solve the problems of strong electroweak symmetry breaking for quark masses and precision electroweak data. We give explicitExpand
Delineating the conformal window
Abstract We identify and characterise the conformal window in gauge theories relevant for beyond the standard model building, e.g. technicolour, using the criteria of metric confinement and causalExpand
Infrared evolution and phase structure of a gauge theory containing different fermion representations
We study the evolution of an asymptotically free vectorial SU(N) gauge theory from the ultraviolet to the infrared and the resultant phase structure in the general case in which the theory containsExpand
The physics of eight flavours
Abstract We study Quantum Chromodynamics with eight flavours by use of lattice simulations and present evidence that the theory still breaks chiral symmetry in the zero temperature, continuum limit.Expand