coupling constant

(redirected from coupling constants)

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.
References in periodicals archive ?
80, each showing coupling constants in the range of 6.
We found firstly that the elementary particles mass obey a simple equation, which is geometrical and based on integral resonances; secondly, two coupling constants (including [alpha]) are used in the equation while we find no specific couplings related to the SM weak and Higgs fields as they use only specific geometrical degrees of freedom; thirdly, all calculi and equations are compatible with a simple form of compositeness.
Following an article by James Cronin, in which he discusses his career in experimental particle physics, physicists from the US, Mexico, Japan, and Europe discuss the following: the polarizabilities of light hadrons, the effective field theory approach to physics beyond the Standard Model using dimension-six operators, the kilometer-scale neutrino detector IceCube, fluid dynamics and viscosity in strongly correlated fluids, the coupling constants of chiral Lagrangians in the meson sector, or low-energy constants, and superconducting radio-frequency cavities.
Among the topics are the physical basis of the NMR experiment, proton chemical shifts and spin-spin coupling constants as functions of structure, the influence of molecular symmetry and chirality on proton magnetic resonance spectra, carbon-13 NMR spectroscopy, selected heteronuclei, and NMR of partially oriented molecules and solid-state NMR.
The positions of the subtituents followed from the coupling constants of the doublets at 7.
The Bragg frequency corresponding to the [GAMMA] point in the photonic band structure [12] is chosen for the purpose of this paper, and the most significantly contributing coupling constants are expressed as follows:
The coupling constants are typical ortho coupling constants.
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.
1]H NMR chemical shifts and coupling constants, as well as 2D NMR spectra without leaving the Isentris environment.
The stereochemistry of 1 was determined to be a trans and cis mixture from the coupling constants (16.