Pions in isospin dense media
Autor(a) principal: | |
---|---|
Data de Publicação: | 2007 |
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=S0103-97332007000400008 |
Resumo: | The thermal and density corrections, in terms of the isospin chemical potential µI , to the mass of the pions, the decay constant and different condensates are studied in the framework of the SU(2) low energy effective chiral Lagrangian at finite temperature in the two phases: The first phase |µI| < m and the second phase |µI|> m, being m the tree-level pion mass. As a function of temperature for µI = 0, the mass remains quite stable, starting to grow for very high values of T, confirming previous results. However, there are interesting corrections to the mass and the other observables mentioned when both effects (temperature and chemical potential) are simultaneously present. At zero temperature the pi± should condense when µI = ± mpi. At finite T, the condensed pion acquires a thermal mass in such a way that a mixture, like in a superfluid, of a condensed and normal phase appears. |
id |
SBF-2_25d832f83c4aa6e01e879deba72206e4 |
---|---|
oai_identifier_str |
oai:scielo:S0103-97332007000400008 |
network_acronym_str |
SBF-2 |
network_name_str |
Brazilian Journal of Physics |
repository_id_str |
|
spelling |
Pions in isospin dense mediaIsospin chemical potentialTemperaturePion superfluidityThe thermal and density corrections, in terms of the isospin chemical potential µI , to the mass of the pions, the decay constant and different condensates are studied in the framework of the SU(2) low energy effective chiral Lagrangian at finite temperature in the two phases: The first phase |µI| < m and the second phase |µI|> m, being m the tree-level pion mass. As a function of temperature for µI = 0, the mass remains quite stable, starting to grow for very high values of T, confirming previous results. However, there are interesting corrections to the mass and the other observables mentioned when both effects (temperature and chemical potential) are simultaneously present. At zero temperature the pi± should condense when µI = ± mpi. At finite T, the condensed pion acquires a thermal mass in such a way that a mixture, like in a superfluid, of a condensed and normal phase appears.Sociedade Brasileira de Física2007-07-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332007000400008Brazilian Journal of Physics v.37 n.2b 2007reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332007000400008info:eu-repo/semantics/openAccessLoewe,M.Villavicencio,C.eng2007-08-13T00:00:00Zoai:scielo:S0103-97332007000400008Revistahttp://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:2007-08-13T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
Pions in isospin dense media |
title |
Pions in isospin dense media |
spellingShingle |
Pions in isospin dense media Loewe,M. Isospin chemical potential Temperature Pion superfluidity |
title_short |
Pions in isospin dense media |
title_full |
Pions in isospin dense media |
title_fullStr |
Pions in isospin dense media |
title_full_unstemmed |
Pions in isospin dense media |
title_sort |
Pions in isospin dense media |
author |
Loewe,M. |
author_facet |
Loewe,M. Villavicencio,C. |
author_role |
author |
author2 |
Villavicencio,C. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Loewe,M. Villavicencio,C. |
dc.subject.por.fl_str_mv |
Isospin chemical potential Temperature Pion superfluidity |
topic |
Isospin chemical potential Temperature Pion superfluidity |
description |
The thermal and density corrections, in terms of the isospin chemical potential µI , to the mass of the pions, the decay constant and different condensates are studied in the framework of the SU(2) low energy effective chiral Lagrangian at finite temperature in the two phases: The first phase |µI| < m and the second phase |µI|> m, being m the tree-level pion mass. As a function of temperature for µI = 0, the mass remains quite stable, starting to grow for very high values of T, confirming previous results. However, there are interesting corrections to the mass and the other observables mentioned when both effects (temperature and chemical potential) are simultaneously present. At zero temperature the pi± should condense when µI = ± mpi. At finite T, the condensed pion acquires a thermal mass in such a way that a mixture, like in a superfluid, of a condensed and normal phase appears. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007-07-01 |
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=S0103-97332007000400008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332007000400008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332007000400008 |
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.37 n.2b 2007 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_ |
1754734864011100160 |