Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark

Bibliographic Details
Main Author: Paulo Júnior, Ademar
Publication Date: 2014
Format: Master thesis
Language: por
Source: Repositório Institucional da UFG
Download full: http://repositorio.bc.ufg.br/tede/handle/tede/3064
Summary: The Quantum Chromodynamics (QCD) is the current theory that aim to describe the strong interactions in the Standard Model. It is a non-abelian gauge theory where quarks and gluons are the fundamental particles. However, QCD exhibits difficulties when low energy regimes are considered and perturbative methods cannot be employed. Thus, effective models are extremely important and useful when low energy limits are considered. Starting with QCD we develop an effetive model taking into account the second order gluon condensate, ⟨Aa A a ⟩, and quark-antiquark, ⟨ qq⟩. The coupled GAP equations are derived for Ns = 3 and numerical solutions are found for that. Furthermore, a functional expansion from effective potencial to the sixth order is calculated and contributions from that terms inserted into the effective lagrangian.
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spelling Braghin, Fábio Luishttp://lattes.cnpq.br/9375085677737347Krein, Gastão Ináciohttp://lattes.cnpq.br/5704289678296630Avelar, Ardiley Torreshttp://lattes.cnpq.br/5732286631137637http://lattes.cnpq.br/0621884204919606Paulo Júnior, Ademar2014-09-15T18:48:28Z2014-02-17PULO JUNIOR, Ademar. Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark. 2014. 91 f. Dissertação (Mestrado em Física) - Universidade Federal de Goiás, Goiânia, 2014.http://repositorio.bc.ufg.br/tede/handle/tede/3064The Quantum Chromodynamics (QCD) is the current theory that aim to describe the strong interactions in the Standard Model. It is a non-abelian gauge theory where quarks and gluons are the fundamental particles. However, QCD exhibits difficulties when low energy regimes are considered and perturbative methods cannot be employed. Thus, effective models are extremely important and useful when low energy limits are considered. Starting with QCD we develop an effetive model taking into account the second order gluon condensate, ⟨Aa A a ⟩, and quark-antiquark, ⟨ qq⟩. The coupled GAP equations are derived for Ns = 3 and numerical solutions are found for that. Furthermore, a functional expansion from effective potencial to the sixth order is calculated and contributions from that terms inserted into the effective lagrangian.A Cromodin^amica Qu^antica (QCD) e a atual teoria que busca descrever as intera c~oes fortes dentro do modelo padr~ao. Trata-se de uma teoria de calibre n~ao-abeliana em que os quarks e gl uons constituem as part culas fundamentais. Entretanto, a QCD apresenta di - culdades quando consideram-se regimes de baixas energias em que t ecnicas n~ao perturbativas devem ser utilizadas. Assim, o uso de modelos efetivos e de extrema import^ancia e utilidade para os regimes de baixas energias que s~ao os de interesse deste trabalho. Partindo da QCD desenvolveremos um modelo efetivo para intera c~oes entre quarks levando em conta a presen ca dos condensados de gl uons de ordem dois, ⟨Aa A a ⟩, e de quark-antiquark, ⟨ qq⟩. As equa c~oes do GAP acopladas s~ao obtidas para Ns = 3 e suas solu c~oes num ericas s~ao encontradas. Al em disso, a expans~ao funcional do potencial efetivo at e sexta ordem no campo dos quarks e calculada e as contribui c~oes destes termos consideradas na lagrangeana efetiva.Submitted by Jaqueline Silva (jtas29@gmail.com) on 2014-09-15T18:48:07Z No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Ademar Paulo Júnior.pdf: 470454 bytes, checksum: ca666cb4df9cfed260dd792d9b884664 (MD5)Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2014-09-15T18:48:28Z (GMT) No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Ademar Paulo Júnior.pdf: 470454 bytes, checksum: ca666cb4df9cfed260dd792d9b884664 (MD5)Made available in DSpace on 2014-09-15T18:48:28Z (GMT). No. of bitstreams: 2 license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Ademar Paulo Júnior.pdf: 470454 bytes, checksum: ca666cb4df9cfed260dd792d9b884664 (MD5) Previous issue date: 2014-02-17application/pdfhttp://repositorio.bc.ufg.br/tede/retrieve/7639/Ademar%20Paulo%20J%c3%banior.pdf.jpgporUniversidade Federal de GoiásPrograma de Pós-graduação em Fisica (IF)UFGBrasilInstituto de Física - IF (RG)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessCromodinâmica quânticaQuarksGlúonsEnergiasQuantum chromodynamicsQuarksGluonsEnergiesFISICA GERAL::FISICA CLASSICA E FISICA QUANTICA; MECANICA E CAMPOSInterações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquarkinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis3162138865744262028600600600-40296588536520493065970492835442269114reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGORIGINALAdemar Paulo Júnior.pdfAdemar Paulo Júnior.pdfapplication/pdf470454http://repositorio.bc.ufg.br/tede/bitstreams/cb754833-79e1-4af0-ab57-056886888c1d/downloadca666cb4df9cfed260dd792d9b884664MD52TEXTAdemar Paulo Júnior.pdf.txtAdemar Paulo Júnior.pdf.txtExtracted Texttext/plain154904http://repositorio.bc.ufg.br/tede/bitstreams/4212a8da-3449-46d9-9889-56ffc2081870/download82210bb23521f06103cd59b03f6f7adcMD57THUMBNAILAdemar Paulo Júnior.pdf.jpgAdemar Paulo Júnior.pdf.jpgGenerated Thumbnailimage/jpeg2886http://repositorio.bc.ufg.br/tede/bitstreams/00fab5a9-bd3f-4176-9b11-a6d7c0a230b7/download820bd3ad33c09cfc9fd351c359ffe945MD58LICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
title Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
spellingShingle Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
Paulo Júnior, Ademar
Cromodinâmica quântica
Quarks
Glúons
Energias
Quantum chromodynamics
Quarks
Gluons
Energies
FISICA GERAL::FISICA CLASSICA E FISICA QUANTICA; MECANICA E CAMPOS
title_short Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
title_full Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
title_fullStr Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
title_full_unstemmed Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
title_sort Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark
author Paulo Júnior, Ademar
author_facet Paulo Júnior, Ademar
author_role author
dc.contributor.advisor1.fl_str_mv Braghin, Fábio Luis
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/9375085677737347
dc.contributor.referee1.fl_str_mv Krein, Gastão Inácio
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/5704289678296630
dc.contributor.referee2.fl_str_mv Avelar, Ardiley Torres
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/5732286631137637
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/0621884204919606
dc.contributor.author.fl_str_mv Paulo Júnior, Ademar
contributor_str_mv Braghin, Fábio Luis
Krein, Gastão Inácio
Avelar, Ardiley Torres
dc.subject.por.fl_str_mv Cromodinâmica quântica
Quarks
Glúons
Energias
topic Cromodinâmica quântica
Quarks
Glúons
Energias
Quantum chromodynamics
Quarks
Gluons
Energies
FISICA GERAL::FISICA CLASSICA E FISICA QUANTICA; MECANICA E CAMPOS
dc.subject.eng.fl_str_mv Quantum chromodynamics
Quarks
Gluons
Energies
dc.subject.cnpq.fl_str_mv FISICA GERAL::FISICA CLASSICA E FISICA QUANTICA; MECANICA E CAMPOS
description The Quantum Chromodynamics (QCD) is the current theory that aim to describe the strong interactions in the Standard Model. It is a non-abelian gauge theory where quarks and gluons are the fundamental particles. However, QCD exhibits difficulties when low energy regimes are considered and perturbative methods cannot be employed. Thus, effective models are extremely important and useful when low energy limits are considered. Starting with QCD we develop an effetive model taking into account the second order gluon condensate, ⟨Aa A a ⟩, and quark-antiquark, ⟨ qq⟩. The coupled GAP equations are derived for Ns = 3 and numerical solutions are found for that. Furthermore, a functional expansion from effective potencial to the sixth order is calculated and contributions from that terms inserted into the effective lagrangian.
publishDate 2014
dc.date.accessioned.fl_str_mv 2014-09-15T18:48:28Z
dc.date.issued.fl_str_mv 2014-02-17
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.identifier.citation.fl_str_mv PULO JUNIOR, Ademar. Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark. 2014. 91 f. Dissertação (Mestrado em Física) - Universidade Federal de Goiás, Goiânia, 2014.
dc.identifier.uri.fl_str_mv http://repositorio.bc.ufg.br/tede/handle/tede/3064
identifier_str_mv PULO JUNIOR, Ademar. Interações efetivas entre quarks a baixas energias a partir da Cromodinâmica Quântica considerando o condensado de quark-antiquark. 2014. 91 f. Dissertação (Mestrado em Física) - Universidade Federal de Goiás, Goiânia, 2014.
url http://repositorio.bc.ufg.br/tede/handle/tede/3064
dc.language.iso.fl_str_mv por
language por
dc.relation.program.fl_str_mv 3162138865744262028
dc.relation.confidence.fl_str_mv 600
600
600
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dc.publisher.none.fl_str_mv Universidade Federal de Goiás
dc.publisher.program.fl_str_mv Programa de Pós-graduação em Fisica (IF)
dc.publisher.initials.fl_str_mv UFG
dc.publisher.country.fl_str_mv Brasil
dc.publisher.department.fl_str_mv Instituto de Física - IF (RG)
publisher.none.fl_str_mv Universidade Federal de Goiás
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFG
instname:Universidade Federal de Goiás (UFG)
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