[HTML][HTML] 50 Years of quantum chromodynamics: Introduction and Review

F Gross, E Klempt, SJ Brodsky, AJ Buras… - The European Physical …, 2023 - Springer
Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be
described by a local SU (3) gauge symmetry with charges called “color quantum numbers” …

Tetraquarks in large-Nc QCD

W Lucha, D Melikhov, H Sazdjian - Progress in Particle and Nuclear …, 2021 - Elsevier
The generalization of the color gauge group SU (3) to SU (N c), with N c taking arbitrarily
large values, as had been proposed and developed by't Hooft, has allowed for a decisive …

Volume independence in large Nc QCD-like gauge theories

P Kovtun, M Ünsal, LG Yaffe - Journal of High Energy Physics, 2007 - iopscience.iop.org
Volume independence in large N c gauge theories may be viewed as a generalized orbifold
equivalence. The reduction to zero volume (or Eguchi-Kawai reduction) is a special case of …

Vacuum structure of bifundamental gauge theories at finite topological angles

Y Tanizaki, Y Kikuchi - Journal of High Energy Physics, 2017 - Springer
A bstract We discuss possible vacuum structures of SU (n)× SU (n) gauge theories with
bifundamental matters at finite θ angles. In order to give a precise constraint, a mixed't Hooft …

1-form symmetry versus large N QCD

A Cherman, T Jacobson, M Neuzil - Journal of High Energy Physics, 2023 - Springer
JHEP02(2023)192 Page 1 JHEP02(2023)192 Published for SISSA by Springer Received:
November 1, 2022 Revised: December 1, 2022 Accepted: January 31, 2023 Published …

QCD-like theories on : A smooth journey from small to large <?format ?>with double-trace deformations

M Shifman, M Uensal - Physical Review D—Particles, Fields, Gravitation, and …, 2008 - APS
We consider QCD-like theories with one massless fermion in various representations of the
gauge group SU (N). The theories are formulated on R 3× S 1. In the decompactification limit …

BPS wilson loops in generic conformal = 2 SU(N) SYM theories

M Billò, F Galvagno, A Lerda - Journal of High Energy Physics, 2019 - Springer
A bstract We consider the 1/2 BPS circular Wilson loop in a generic\(\mathcal {N}\)= 2 SU (N)
SYM theory with conformal matter content. We study its vacuum expectation value, both at …

Conformality or confinement:(IR) relevance of topological excitations

E Poppitz, M Ünsal - Journal of High Energy Physics, 2009 - iopscience.iop.org
What distinguishes two asymptotically-free non-abelian gauge theories on R 4, one of which
is just below the conformal window boundary and confines, while the other is slightly above …

Beta functions of 2D adjoint QCD

A Cherman, M Neuzil - Physical Review D, 2024 - APS
We discuss the long-distance physics of 2D adjoint QCD when it is viewed as an effective
field theory and determine the β functions for its two classically marginal four-Fermi …

(In)validity of large orientifold equivalence

M Ünsal, LG Yaffe - Physical Review D—Particles, Fields, Gravitation, and …, 2006 - APS
It has been argued that the bosonic sectors of supersymmetric SU (N) Yang-Mills theory, and
of QCD with a single fermion in the antisymmetric (or symmetric) tensor representation, are …