Skyrmions in the presence of isospin chemical potential

We analyze the existence of localized finite energy topological excitations on top of the perturbative pion vacuum within the Skyrme model at finite isospin chemical potential and finite pion mass. We show that there is a critical isospin chemical potential μIc above which such solutions cease to ex...

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Detalles Bibliográficos
Autores principales: Ponciano, Juan Adolfo, Scoccola, Norberto Nerio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2008
Materias:
Física
Piones
Isospin
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83057
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83057
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Piones
Isospin
spellingShingle Física
Piones
Isospin
Ponciano, Juan Adolfo
Scoccola, Norberto Nerio
Skyrmions in the presence of isospin chemical potential
topic_facet Física
Piones
Isospin
description We analyze the existence of localized finite energy topological excitations on top of the perturbative pion vacuum within the Skyrme model at finite isospin chemical potential and finite pion mass. We show that there is a critical isospin chemical potential μIc above which such solutions cease to exist. We find that μIc is closely related to the value of the pion mass. In particular for vanishing pion mass we obtain μIc = 0 in contradiction with some results recently reported in the literature. We also find that below μIc the skyrmion mass and baryon radius show, at least for the case of the hedgehog ansatz, only a mild dependence on the isospin chemical potential.
format Articulo
Articulo
author Ponciano, Juan Adolfo
Scoccola, Norberto Nerio
author_facet Ponciano, Juan Adolfo
Scoccola, Norberto Nerio
author_sort Ponciano, Juan Adolfo
title Skyrmions in the presence of isospin chemical potential
title_short Skyrmions in the presence of isospin chemical potential
title_full Skyrmions in the presence of isospin chemical potential
title_fullStr Skyrmions in the presence of isospin chemical potential
title_full_unstemmed Skyrmions in the presence of isospin chemical potential
title_sort skyrmions in the presence of isospin chemical potential
publishDate 2008
url http://sedici.unlp.edu.ar/handle/10915/83057
work_keys_str_mv AT poncianojuanadolfo skyrmionsinthepresenceofisospinchemicalpotential
AT scoccolanorbertonerio skyrmionsinthepresenceofisospinchemicalpotential
bdutipo_str Repositorios
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