6 papers
QCD. What else is needed for the Proton Structure Function?
Y. S. Kim
While QCD can provide corrections to the parton distribution function, it cannot produce the distribution. Where is then the starting point for the proton structure function? The o…
Internal Space-time Symmetries according to Einstein, Wigner, Dirac, and Feynman
Y. S. Kim, Marilyn E. Noz
When Einstein formulated his special relativity in 1905, he established the law of Lorentz transformations for point particles. It is now known that particles have internal space-t…
Internal Space-time Symmetries of Massive and Massless Particles and their Unification
Y. S. Kim
It is noted that the internal space-time symmetries of relativistic particles are dictated by Wigner's little groups. The symmetry of massive particles is like the three-dimensiona…
Binary Representations of ABCD Matrices
S. Baskal, Y. S. Kim
The ABCD matrix is one of the essential mathematical instruments in optics. It is the two-by-two representation of the group Sp(2), which is applicable to many branches of physics,…
Unification of Spacetime Symmetries of Massive and Massless Particles
Y. S. Kim
The internal space-time symmetries of relativistic particles are dictated by Wigner's little groups. The -like little group for a massive particle at rest and the -like…
Four-potentials and Maxwell Field Tensors from Spinors as Infinite-Momentum/Zero-Mass Limits of their Massive Counterparts
S. Baskal, Y. S. Kim
Four spinors are considered within the framework of Wigner's little groups which dictate internal space-time symmetries of relativistic particles. It is indicated that th…