NDLI: Atoms in flight and the remarkable connections between atomic and hadronic physics

Content Provider	Springer Nature Link
Author	Brodsky, Stanley J.
Copyright Year	2012
Abstract	Atomic physics and hadron physics are both based on Yang Mills gauge theory; in fact, quantum electrodynamics can be regarded as the zero-color limit of quantum chromodynamics. I review a number of areas where the techniques of atomic physics provide important insight into the theory of hadrons in QCD. For example, the Dirac-Coulomb equation, which predicts the spectroscopy and structure of hydrogenic atoms, has an analog in hadron physics in the form of light-front relativistic equations of motion which give a remarkable first approximation to the spectroscopy, dynamics, and structure of light hadrons. The renormalization scale for the running coupling, which is unambiguously set in QED, leads to a method for setting the renormalization scale in QCD. The production of atoms in flight provides a method for computing the formation of hadrons at the amplitude level. Conversely, many techniques which have been developed for hadron physics, such as scaling laws, evolution equations, and light-front quantization have equal utility for atomic physics, especially in the relativistic domain. I also present a new perspective for understanding the contributions to the cosmological constant from QED and QCD.
Starting Page	83
Ending Page	92
Page Count	10
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	209
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-02-16
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Quantum electrodynamics Atomic physics Hadron physics Light-front Condensed Matter Physics Atomic, Molecular, Optical and Plasma Physics Surfaces and Interfaces, Thin Films Nuclear Physics, Heavy Ions, Hadrons
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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