Loops and loop clouds - a numerical approach to the worldline formalism in QED -

A numerical technique for calculating effective actions of electromagnetic backgrounds is proposed, which is based on the string-inspired worldline formalism. As examples, we consider scalar electrodynamics in three and four dimensions to one-loop order. Beyond the constant-magnetic-field case, we a...

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Detalles Bibliográficos
Autores principales: Gies, Holger, Langfeld, Kurt
Lenguaje:eng
Publicado: 2001
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1142/S0217751X02010388
http://cds.cern.ch/record/531566
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author Gies, Holger
Langfeld, Kurt
author_facet Gies, Holger
Langfeld, Kurt
author_sort Gies, Holger
collection CERN
description A numerical technique for calculating effective actions of electromagnetic backgrounds is proposed, which is based on the string-inspired worldline formalism. As examples, we consider scalar electrodynamics in three and four dimensions to one-loop order. Beyond the constant-magnetic-field case, we analyze a step-function-like magnetic field exhibiting a nonlocal and nonperturbative phenomenon: ``magnetic-field diffusion''. Finally, generalizations to fermionic loops and systems at finite temperature are discussed.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2001
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spelling cern-5315662023-03-14T17:03:54Zdoi:10.1142/S0217751X02010388http://cds.cern.ch/record/531566engGies, HolgerLangfeld, KurtLoops and loop clouds - a numerical approach to the worldline formalism in QED -Particle Physics - PhenomenologyA numerical technique for calculating effective actions of electromagnetic backgrounds is proposed, which is based on the string-inspired worldline formalism. As examples, we consider scalar electrodynamics in three and four dimensions to one-loop order. Beyond the constant-magnetic-field case, we analyze a step-function-like magnetic field exhibiting a nonlocal and nonperturbative phenomenon: ``magnetic-field diffusion''. Finally, generalizations to fermionic loops and systems at finite temperature are discussed.A numerical technique for calculating effective actions of electromagnetic backgrounds is proposed, which is based on the string-inspired worldline formalism. As examples, we consider scalar electrodynamics in three and four dimensions to one-loop order. Beyond the constant-magnetic-field case, we analyze a step-function-like magnetic field exhibiting a nonlocal and nonperturbative phenomenon: ``magnetic-field diffusion''. Finally, generalizations to fermionic loops and systems at finite temperature are discussed.hep-ph/0112198CERN-TH-2001-368CERN-TH-2001-368oai:cds.cern.ch:5315662001-12-14
spellingShingle Particle Physics - Phenomenology
Gies, Holger
Langfeld, Kurt
Loops and loop clouds - a numerical approach to the worldline formalism in QED -
title Loops and loop clouds - a numerical approach to the worldline formalism in QED -
title_full Loops and loop clouds - a numerical approach to the worldline formalism in QED -
title_fullStr Loops and loop clouds - a numerical approach to the worldline formalism in QED -
title_full_unstemmed Loops and loop clouds - a numerical approach to the worldline formalism in QED -
title_short Loops and loop clouds - a numerical approach to the worldline formalism in QED -
title_sort loops and loop clouds - a numerical approach to the worldline formalism in qed -
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1142/S0217751X02010388
http://cds.cern.ch/record/531566
work_keys_str_mv AT giesholger loopsandloopcloudsanumericalapproachtotheworldlineformalisminqed
AT langfeldkurt loopsandloopcloudsanumericalapproachtotheworldlineformalisminqed

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