Matsubara frequency
id:
matsubara-frequency-233-18598371
title:
Matsubara frequency
text:
In thermal quantum field theory, the Matsubara frequency summation is a technique used to simplify calculations involving Euclidean path integrals. In thermal quantum field theory, bosonic and fermionic quantum fields ϕ are respectively periodic or antiperiodic in imaginary time τ , with periodicity β = ℏ / k B T . Matsubara summation refers to the technique of expanding these fields in Fourier series ϕ = 1 β ∑ n e − i ω n τ ϕ ⇔ ϕ = 1 β ∫ 0 β d τ e i ω n τ ϕ . The frequencies ω n are called th
brand slug:
wiki
category slug:
encyclopedia
description:
Frequencies used in thermal field theory
original url:
https://en.wikipedia.org/wiki/Matsubara_frequency
date created:
date modified:
2024-04-19T14:41:33Z
main entity:
{"identifier":"Q6788014","url":"https://www.wikidata.org/entity/Q6788014"}
image:
fields total:
13
integrity:
14