Gell-Mann and Low theorem
id:
gell-mann-and-low-theorem-268-567968
title:
Gell-Mann and Low theorem
text:
In quantum field theory, the Gell-Mann and Low theorem is a mathematical statement that allows one to relate the ground state of an interacting system to the ground state of the corresponding non-interacting theory. It was proved in 1951 by Murray Gell-Mann and Francis E. Low. The theorem is useful because, among other things, by relating the ground state of the interacting theory to its non-interacting ground state, it allows one to express Green's functions as expectation values of interaction
brand slug:
wiki
category slug:
encyclopedia
description:
Theorem concerning quantum field theory ground states
original url:
https://en.wikipedia.org/wiki/Gell-Mann_and_Low_theorem
date created:
date modified:
2023-05-11T15:20:56Z
main entity:
{"identifier":"Q5530454","url":"https://www.wikidata.org/entity/Q5530454"}
image:
fields total:
13
integrity:
14