7 papers
Evidence for Quark Confinement in the Proton
Xiangdong Ji, Gerald A. Miller, Chen Yang
The strong interaction is the fundamental force that holds quarks and the gluon force carriers together to form protons and neutrons and also binds the atomic nucleus. The theory g…
The Proton Radius Puzzle
Gerald A. Miller
Pohl et al. measured the energy difference between the 2P and 2S states of muonic hydrogen and used it to determine a precise value of the proton radius. The result disagreed signi…
Imaging baryon number density within the proton
Spencer R. Klein, Mathias C. Labonte, Zachary Sweger +2
The spatial extent of the proton is a key factor in nuclear physics. Different measurement techniques probe different aspects of the proton, yielding different radii. The mass and…
Proton-Size Resolution of the Hyperfine Puzzle in Hydrogen
Gerald A. Miller
Baym and Farrar (arXiv:2601.02300v1) have recently pointed out a puzzle in understanding the role of the hyperfine interaction in the ground state of a hydrogen atom. If one uses a…
On the Impossibility of Obtaining Time-Independent, Three-Dimensional, Spherically-Symmetric Densities of Confined Systems of Relativistically Moving Constituents
Gerald A. Miller
The quantum mechanical definition of probability, the uncertainty principle and Poincare invariance provide strong basic restrictions on the ability to define spatial densities ass…
Quark Phase Space Distributions in Nuclei
Alexis Nikolakopoulos, Gerald A. Miller
In [PRC 110, 025201], the authors construct a model for nuclear matter which features a quarkyonic phase. A main feature in this model is that the nucleon occupation is strongly re…