Beta function (physics)
id:
beta-function-physics-176-12655856
title:
Beta function (physics)
text:
In theoretical physics, specifically quantum field theory, a beta function, β(g), encodes the dependence of a coupling parameter, g, on the energy scale, μ, of a given physical process described by quantum field theory.
It is defined as
-
- β = ∂ g ∂ ln , and, because of the underlying renormalization group, it has no explicit dependence on μ, so it only depends on μ implicitly through g.
This dependence on the energy scale thus specified is known as the running of the coupling paramet
brand slug:
wiki
category slug:
encyclopedia
description:
Function that encodes the dependence of a coupling parameter on the energy scale
original url:
https://en.wikipedia.org/wiki/Beta_function_(physics)
date created:
2004-10-04T00:04:37Z
date modified:
2024-09-03T19:07:38Z
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image:
{"content_url":"https://upload.wikimedia.org/wikipedia/commons/1/1f/Feynmann_Diagram_Gluon_Radiation.svg","width":400,"height":250}
fields total:
13
integrity:
16