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6 days ago · The quantum chromodynamics (QCD) sector defines the interactions between quarks and gluons, which is a Yang–Mills gauge theory with SU(3) symmetry, generated by = /. Since leptons do not interact with gluons, they are not affected by this sector.
4 days ago · Quantum chromodynamics (QCD) was born. In 1973, David Gross, Frank Wilczek, and Hugh David Politzer showed that non-Abelian gauge theories are "asymptotically free", meaning that under renormalization, the coupling constant of the strong interaction decreases as the interaction energy increases.
4 days ago · A Feynman diagram is a graphical representation of a perturbative contribution to the transition amplitude or correlation function of a quantum mechanical or statistical field theory. Within the canonical formulation of quantum field theory, a Feynman diagram represents a term in the Wick's expansion of the perturbative S -matrix.
Sep 24, 2024 · Quantum chromodynamics describes how the strong force binds quarks and antiquarks together to form protons, neutrons, and other particles known as hadrons. The critical point is analogous...
Sep 10, 2024 · From quantum electro- and chromodynamics to nuclear and condensed matter physics, Feynman’s diagrammatic technique is arguably the most universal approach to describing quantum many-body...
1 day ago · Although charmonium states are thought to be an ideal probe to test quantum chromodynamics (QCD) in high energy hadron-hadron and heavy-ion collisions, their production mechanism and how they interact with the surrounding nuclear medium is still lacking of sufficient knowledge.
Sep 16, 2024 · About 100 pages are devoted to hadronic physics: deep inelastic scattering, parton model, parton-distribution functions and quantum chromodynamics (QCD). Calculations in perturbative QCD are discussed in some detail and there is also an accessible section in non-perturbative QCD that can serve as a very nice introduction to beginner ...
