The elements of the quark-parton model and its incorporation within the framework of perturbative Quantum Chromodynamics are laid out. The development of the basic concept of quarks as fundamental constituents of matter is traced in considerable detail, emphasizing the interplay of experimental observations and their theoretical interpretation. The relation of quarks to partons, invented by Fey...

Abstract The D-term is one of the conserved charges hadrons defined as forward limit gravitational form factor D(t). We calculate nucleon’s in a holographic quantum chromodynamics model which nucleon described soliton five dimensions. show that D(t) saturated by exchanges infinitely many 0++ and 2++ glueballs dual to transverse-traceless metric fluctuations on Wick-rotated AdS7 black hole geome...

We review lattice evidence showing that center-vortex condensation is a serious candidate for the mechanism of colour confinement in quantum chromodynamics.