Going to the light front with contour deformations

Detalhes bibliográficos
Autor(a) principal: Eichmann, Gernot
Data de Publicação: 2022
Outros Autores: Ferreira, Eduardo, Stadler, Alfred
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/32873
https://doi.org/10.1103/physrevd.105.034009
Resumo: We explore a new method to calculate the valence light-front wave function of a system of two interacting particles, which is based on contour deformations combined with analytic continuation methods to project the Bethe-Salpeter wave function onto the light front. In this proof-of-concept study, we solve the Bethe-Salpeter equation for a scalar model and find excellent agreement between the light-front wave functions obtained with contour deformations and those obtained with the Nakanishi method frequently employed in the literature. The contour-deformation method is also able to handle extensions of the scalar model that mimic certain features of QCD such as unequal masses and complex singularities. In principle the method is suitable for computing parton distributions on the light front such as parton distribution functions, transverse momentum distributions and generalized parton distributions in the future.
id RCAP_bb45fbb0fa1d97b715f51617193dff93
oai_identifier_str oai:dspace.uevora.pt:10174/32873
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling Going to the light front with contour deformationsBethe-Salpeter equationBound statesNonperturbative effects in field theoryQuantum chromodynamicsWe explore a new method to calculate the valence light-front wave function of a system of two interacting particles, which is based on contour deformations combined with analytic continuation methods to project the Bethe-Salpeter wave function onto the light front. In this proof-of-concept study, we solve the Bethe-Salpeter equation for a scalar model and find excellent agreement between the light-front wave functions obtained with contour deformations and those obtained with the Nakanishi method frequently employed in the literature. The contour-deformation method is also able to handle extensions of the scalar model that mimic certain features of QCD such as unequal masses and complex singularities. In principle the method is suitable for computing parton distributions on the light front such as parton distribution functions, transverse momentum distributions and generalized parton distributions in the future.FCT (Fundação para a Ciência e a Tecnologia)American Physical Society2022-12-27T16:11:35Z2022-12-272022-02-10T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/32873http://hdl.handle.net/10174/32873https://doi.org/10.1103/physrevd.105.034009porGernot Eichmann, Eduardo Ferreira, and Alfred Stadler, "Going to the light front with contour deformations", Phys. Rev. D105, 034009 (2022)https://journals.aps.org/prd/pdf/10.1103/PhysRevD.105.034009ndndstadler@uevora.pt347Eichmann, GernotFerreira, EduardoStadler, Alfredinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:34:27Zoai:dspace.uevora.pt:10174/32873Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:21:57.643711Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Going to the light front with contour deformations
title Going to the light front with contour deformations
spellingShingle Going to the light front with contour deformations
Eichmann, Gernot
Bethe-Salpeter equation
Bound states
Nonperturbative effects in field theory
Quantum chromodynamics
title_short Going to the light front with contour deformations
title_full Going to the light front with contour deformations
title_fullStr Going to the light front with contour deformations
title_full_unstemmed Going to the light front with contour deformations
title_sort Going to the light front with contour deformations
author Eichmann, Gernot
author_facet Eichmann, Gernot
Ferreira, Eduardo
Stadler, Alfred
author_role author
author2 Ferreira, Eduardo
Stadler, Alfred
author2_role author
author
dc.contributor.author.fl_str_mv Eichmann, Gernot
Ferreira, Eduardo
Stadler, Alfred
dc.subject.por.fl_str_mv Bethe-Salpeter equation
Bound states
Nonperturbative effects in field theory
Quantum chromodynamics
topic Bethe-Salpeter equation
Bound states
Nonperturbative effects in field theory
Quantum chromodynamics
description We explore a new method to calculate the valence light-front wave function of a system of two interacting particles, which is based on contour deformations combined with analytic continuation methods to project the Bethe-Salpeter wave function onto the light front. In this proof-of-concept study, we solve the Bethe-Salpeter equation for a scalar model and find excellent agreement between the light-front wave functions obtained with contour deformations and those obtained with the Nakanishi method frequently employed in the literature. The contour-deformation method is also able to handle extensions of the scalar model that mimic certain features of QCD such as unequal masses and complex singularities. In principle the method is suitable for computing parton distributions on the light front such as parton distribution functions, transverse momentum distributions and generalized parton distributions in the future.
publishDate 2022
dc.date.none.fl_str_mv 2022-12-27T16:11:35Z
2022-12-27
2022-02-10T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/32873
http://hdl.handle.net/10174/32873
https://doi.org/10.1103/physrevd.105.034009
url http://hdl.handle.net/10174/32873
https://doi.org/10.1103/physrevd.105.034009
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Gernot Eichmann, Eduardo Ferreira, and Alfred Stadler, "Going to the light front with contour deformations", Phys. Rev. D105, 034009 (2022)
https://journals.aps.org/prd/pdf/10.1103/PhysRevD.105.034009
nd
nd
stadler@uevora.pt
347
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799136701520543744

Registros relacionados