Infrared safety
id:
infrared-safety-273-12542893
title:
Infrared safety
text:
In quantum field theory, and especially asymptotically free quantum field theories, an observable is infrared safe if it does not depend on the low energy/long distance physics of the theory. Such observables can therefore be calculated reliably using perturbative methods and then compared to experiment.
An example of an observable which is infrared safe is the total scattering cross-section for the collision of an electron and a positron to produce hadrons.
brand slug:
wiki
category slug:
encyclopedia
description:
Observables that are independent of low energy physics
original url:
https://en.wikipedia.org/wiki/Infrared_safety
date created:
date modified:
2024-04-10T21:35:49Z
main entity:
{"identifier":"Q17098194","url":"https://www.wikidata.org/entity/Q17098194"}
image:
fields total:
13
integrity:
14