Thermal operator representation of feynman graphs

Thermal operator representation of feynman graphs

In this talk I describe an interesting relation between Feynman graphs at finite temperature and chemical potential and the corresponding ones at zero temperature. The operator relating the two which we call the "thermal operator", simplifies the evaluation of finite temperature graphs and helps in understanding better several physical questions such as cutting rules, forward scattering, gauge invariance etc at finite temperature.

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Main Author: Das,Ashok
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2006
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700005
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spelling oai:scielo:S0103-973320060007000052007-06-21Thermal operator representation of feynman graphsDas,Ashok Quantum field theory Finite temperature thermal operator In this talk I describe an interesting relation between Feynman graphs at finite temperature and chemical potential and the corresponding ones at zero temperature. The operator relating the two which we call the "thermal operator", simplifies the evaluation of finite temperature graphs and helps in understanding better several physical questions such as cutting rules, forward scattering, gauge invariance etc at finite temperature.info:eu-repo/semantics/openAccessSociedade Brasileira de FísicaBrazilian Journal of Physics v.36 n.4a 20062006-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700005en10.1590/S0103-97332006000700005
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Das,Ashok
spellingShingle Das,Ashok
Thermal operator representation of feynman graphs
author_facet Das,Ashok
author_sort Das,Ashok
title Thermal operator representation of feynman graphs
title_short Thermal operator representation of feynman graphs
title_full Thermal operator representation of feynman graphs
title_fullStr Thermal operator representation of feynman graphs
title_full_unstemmed Thermal operator representation of feynman graphs
title_sort thermal operator representation of feynman graphs
description In this talk I describe an interesting relation between Feynman graphs at finite temperature and chemical potential and the corresponding ones at zero temperature. The operator relating the two which we call the "thermal operator", simplifies the evaluation of finite temperature graphs and helps in understanding better several physical questions such as cutting rules, forward scattering, gauge invariance etc at finite temperature.
publisher Sociedade Brasileira de Física
publishDate 2006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000700005
work_keys_str_mv AT dasashok thermaloperatorrepresentationoffeynmangraphs
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