Multiloop calculations with implicit regularization in massless theories
Autor(a) principal: | |
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Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Physics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200018 |
Resumo: | We establish a systematic way to calculate multiloop amplitudes of infrared safe massless models with Implicit Regularization (IR), with a direct cancelation of the fictitious mass introduced by the procedure. The ultraviolet content of such amplitudes have a simple structure and its separation permits the identification of all the potential symmetry violating terms, the surface terms. Moreover, we develop a technique for the calculation of an important kind of finite multiloop integral which seems particularly convenient to use Feynman parametrization. Finally, we discuss the Implicit Regularization of infrared divergent amplitudes, showing with an example how it can be dealt with an analogous procedure in the coordinate space. |
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Brazilian Journal of Physics |
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Multiloop calculations with implicit regularization in massless theoriesRegularizationRenormalizationMultiloop calculationsWe establish a systematic way to calculate multiloop amplitudes of infrared safe massless models with Implicit Regularization (IR), with a direct cancelation of the fictitious mass introduced by the procedure. The ultraviolet content of such amplitudes have a simple structure and its separation permits the identification of all the potential symmetry violating terms, the surface terms. Moreover, we develop a technique for the calculation of an important kind of finite multiloop integral which seems particularly convenient to use Feynman parametrization. Finally, we discuss the Implicit Regularization of infrared divergent amplitudes, showing with an example how it can be dealt with an analogous procedure in the coordinate space.Sociedade Brasileira de Física2010-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200018Brazilian Journal of Physics v.40 n.2 2010reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332010000200018info:eu-repo/semantics/openAccessDias,E. W.Scarpelli,A. P. BaêtaBrito,L. C. T.Fargnoli,H. G.eng2010-06-23T00:00:00Zoai:scielo:S0103-97332010000200018Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2010-06-23T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
Multiloop calculations with implicit regularization in massless theories |
title |
Multiloop calculations with implicit regularization in massless theories |
spellingShingle |
Multiloop calculations with implicit regularization in massless theories Dias,E. W. Regularization Renormalization Multiloop calculations |
title_short |
Multiloop calculations with implicit regularization in massless theories |
title_full |
Multiloop calculations with implicit regularization in massless theories |
title_fullStr |
Multiloop calculations with implicit regularization in massless theories |
title_full_unstemmed |
Multiloop calculations with implicit regularization in massless theories |
title_sort |
Multiloop calculations with implicit regularization in massless theories |
author |
Dias,E. W. |
author_facet |
Dias,E. W. Scarpelli,A. P. Baêta Brito,L. C. T. Fargnoli,H. G. |
author_role |
author |
author2 |
Scarpelli,A. P. Baêta Brito,L. C. T. Fargnoli,H. G. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Dias,E. W. Scarpelli,A. P. Baêta Brito,L. C. T. Fargnoli,H. G. |
dc.subject.por.fl_str_mv |
Regularization Renormalization Multiloop calculations |
topic |
Regularization Renormalization Multiloop calculations |
description |
We establish a systematic way to calculate multiloop amplitudes of infrared safe massless models with Implicit Regularization (IR), with a direct cancelation of the fictitious mass introduced by the procedure. The ultraviolet content of such amplitudes have a simple structure and its separation permits the identification of all the potential symmetry violating terms, the surface terms. Moreover, we develop a technique for the calculation of an important kind of finite multiloop integral which seems particularly convenient to use Feynman parametrization. Finally, we discuss the Implicit Regularization of infrared divergent amplitudes, showing with an example how it can be dealt with an analogous procedure in the coordinate space. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200018 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332010000200018 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332010000200018 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
publisher.none.fl_str_mv |
Sociedade Brasileira de Física |
dc.source.none.fl_str_mv |
Brazilian Journal of Physics v.40 n.2 2010 reponame:Brazilian Journal of Physics instname:Sociedade Brasileira de Física (SBF) instacron:SBF |
instname_str |
Sociedade Brasileira de Física (SBF) |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Brazilian Journal of Physics |
collection |
Brazilian Journal of Physics |
repository.name.fl_str_mv |
Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF) |
repository.mail.fl_str_mv |
sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br |
_version_ |
1754734865401511936 |