Vafa–Witten theorem
id:
vafa-witten-theorem-294-17225226
title:
Vafa–Witten theorem
text:
In theoretical physics, the Vafa–Witten theorem, named after Cumrun Vafa and Edward Witten, is a theorem that shows that vector-like global symmetries such as isospin and baryon number in vector-like gauge theories like quantum chromodynamics cannot be spontaneously broken as long as the theta angle is zero. This theorem can be proved by showing the exponential fall off of the propagator of fermions.
brand slug:
wiki
category slug:
encyclopedia
description:
Theorem concerning spontaneous symmetry breaking
original url:
https://en.wikipedia.org/wiki/Vafa%E2%80%93Witten_theorem
date created:
date modified:
2023-07-19T07:42:58Z
main entity:
{"identifier":"Q10859514","url":"https://www.wikidata.org/entity/Q10859514"}
image:
fields total:
13
integrity:
14