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coupling constant

   Also found in: Wikipedia 0.02 sec.
coupling constant [′kəp·liŋ ′kän·stənt]
(particle physics)
A measure of the strength of a type of interaction between particles, such as the strong interaction between mesons and nucleons, and the weak interaction between four fermions; analogous to the electric charge, which is the coupling constant between charged particles and electromagnetic radiation.
(physics)
A measure of the strength of the coupling between two systems, especially electric circuits; maximum coupling is 1 and no coupling is 0. Also known as coefficient of coupling; coupling coefficient.
A measure of the dependence of one physical quantity on another.
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Other subjects discussed include topological origins of the coupling constants hierarchy, semiclassical dynamics of black holes, black hole evaporation as a nonequilibrium process, and the dynamics of anisotropic universes.
Classical and quantum gravity research by SciTech Book News
Which is to say that while constants such as a fundamental particle mass can be expressed as a dimensionless relationship relative to the Planck scale or ratio to a somewhat more precisely known or available unit of mass, the inverse of the electromagnetic coupling constant alpha is uniquely purely dimensionless as the ?
Pure Derivation of the Exact Fine-Structure Constant & as A Ratio of ... by Sean Sheeter / Reference and Education community
Introduction and Discussion Neutron [beta]-decay provides the most precise measurements of the relative axial-vector coupling constant [lambda].
Radiative corrections for neutron decay and search for new physics by Myhrer, F. / Journal of Research of the National Institute of Standards and Technology
 
 
 
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