Vacuum expectation value
id:
vacuum-expectation-value-324-11633114
title:
Vacuum expectation value
text:
In quantum field theory the vacuum expectation value of an operator is its average or expectation value in the vacuum. The vacuum expectation value of an operator O is usually denoted by ⟨ O ⟩ . One of the most widely used examples of an observable physical effect that results from the vacuum expectation value of an operator is the Casimir effect. This concept is important for working with correlation functions in quantum field theory. It is also important in spontaneous symmetry breaking. Examp
brand slug:
wiki
category slug:
encyclopedia
description:
Type of operator expectation value
original url:
https://en.wikipedia.org/wiki/Vacuum_expectation_value
date created:
date modified:
2024-04-13T17:05:53Z
main entity:
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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:
15