Thermal quantum field theory
id:
thermal-quantum-field-theory-177-1681170
title:
Thermal quantum field theory
text:
In theoretical physics, thermal quantum field theory or finite temperature field theory is a set of methods to calculate expectation values of physical observables of a quantum field theory at finite temperature. In the Matsubara formalism, the basic idea is that the expectation values of operators in a canonical ensemble
- ⟨ A ⟩ = Tr [ exp A ] Tr [ exp ] may be written as expectation values in ordinary quantum field theory where the configuration is evolved by an imaginary time τ = i t. O
brand slug:
wiki
category slug:
encyclopedia
description:
Quantum field theory at non-zero temperatures
original url:
https://en.wikipedia.org/wiki/Thermal_quantum_field_theory
date created:
2005-12-25T21:58:41Z
date modified:
2024-09-03T21:49:19Z
main entity:
{"identifier":"Q7783068","url":"https://www.wikidata.org/entity/Q7783068"}
image:
fields total:
13
integrity:
15