OZI violating eight-quark interactions as a thermometer for chiral transitions
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4339 https://doi.org/10.1016/j.physletb.2007.11.007 |
Resumo: | This work is a follow-up of our recent observation that in the SU(3) flavor limit with vanishing current quark masses the temperature for the chiral transition is substantially reduced by adding eight-quark interactions to the Nambu-Jona-Lasinio Lagrangian with UA(1) breaking. Here we generalize the case to realistic light and strange quark masses and confirm our prior result. Additionally, we demonstrate that depending on the strength of OZI violating eight-quark interactions, the system undergoes either a rapid crossover or a first order phase transition. The meson mass spectra of the low lying pseudoscalars and scalars at T=0 are not sensitive to the difference in the parameter settings that correspond to these two alternatives, except for the singlet-octet mixing scalar channels, mainly the [sigma] meson. |
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OZI violating eight-quark interactions as a thermometer for chiral transitionsThis work is a follow-up of our recent observation that in the SU(3) flavor limit with vanishing current quark masses the temperature for the chiral transition is substantially reduced by adding eight-quark interactions to the Nambu-Jona-Lasinio Lagrangian with UA(1) breaking. Here we generalize the case to realistic light and strange quark masses and confirm our prior result. Additionally, we demonstrate that depending on the strength of OZI violating eight-quark interactions, the system undergoes either a rapid crossover or a first order phase transition. The meson mass spectra of the low lying pseudoscalars and scalars at T=0 are not sensitive to the difference in the parameter settings that correspond to these two alternatives, except for the singlet-octet mixing scalar channels, mainly the [sigma] meson.http://www.sciencedirect.com/science/article/B6TVN-4R53R8N-2/1/650d8850faf17868f33c80e271324f1b2008info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4339http://hdl.handle.net/10316/4339https://doi.org/10.1016/j.physletb.2007.11.007engPhysics Letters B. 659:1-2 (2008) 270-274Osipov, A. A.Hiller, B.Moreira, J.Blin, A. H.info: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:RCAAP2022-05-25T03:29:53Zoai:estudogeral.uc.pt:10316/4339Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:59:42.319090Repositório 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 |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
title |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
spellingShingle |
OZI violating eight-quark interactions as a thermometer for chiral transitions Osipov, A. A. |
title_short |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
title_full |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
title_fullStr |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
title_full_unstemmed |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
title_sort |
OZI violating eight-quark interactions as a thermometer for chiral transitions |
author |
Osipov, A. A. |
author_facet |
Osipov, A. A. Hiller, B. Moreira, J. Blin, A. H. |
author_role |
author |
author2 |
Hiller, B. Moreira, J. Blin, A. H. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Osipov, A. A. Hiller, B. Moreira, J. Blin, A. H. |
description |
This work is a follow-up of our recent observation that in the SU(3) flavor limit with vanishing current quark masses the temperature for the chiral transition is substantially reduced by adding eight-quark interactions to the Nambu-Jona-Lasinio Lagrangian with UA(1) breaking. Here we generalize the case to realistic light and strange quark masses and confirm our prior result. Additionally, we demonstrate that depending on the strength of OZI violating eight-quark interactions, the system undergoes either a rapid crossover or a first order phase transition. The meson mass spectra of the low lying pseudoscalars and scalars at T=0 are not sensitive to the difference in the parameter settings that correspond to these two alternatives, except for the singlet-octet mixing scalar channels, mainly the [sigma] meson. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008 |
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/10316/4339 http://hdl.handle.net/10316/4339 https://doi.org/10.1016/j.physletb.2007.11.007 |
url |
http://hdl.handle.net/10316/4339 https://doi.org/10.1016/j.physletb.2007.11.007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Physics Letters B. 659:1-2 (2008) 270-274 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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 |
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1799133888290750464 |