Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop
We study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks wit...
Guardado en:
| Autores principales: | , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
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2010
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/126172 |
| Aporte de: |
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I19-R120-10915-126172 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Física Particle physics Physics Quark model Strange quark Meson Quark–gluon plasma Strangeness Pseudoscalar meson Deconfinement Quark |
| spellingShingle |
Física Particle physics Physics Quark model Strange quark Meson Quark–gluon plasma Strangeness Pseudoscalar meson Deconfinement Quark Contrera, Gustavo Aníbal Gómez Dumm, Daniel Alberto Scoccola, Norberto Nerio Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop |
| topic_facet |
Física Particle physics Physics Quark model Strange quark Meson Quark–gluon plasma Strangeness Pseudoscalar meson Deconfinement Quark |
| description |
We study the finite temperature behavior of light scalar and pseudoscalar meson properties in the context of a three-flavor nonlocal chiral quark model. The model includes mixing with active strangeness degrees of freedom, and takes care of the effect of gauge interactions by coupling the quarks with the Polyakov loop. We analyze the chiral restoration and deconfinement transitions, as well as the temperature dependence of meson masses, mixing angles and decay constants. The critical temperature is found to be T<sub>c</sub> ≃ 202 MeV, in better agreement with lattice results than the value recently obtained in the local SU(3) PNJL model. It is seen that above T<sub>c</sub> pseudoscalar meson masses get increased, becoming degenerate with the masses of their chiral partners. The temperatures at which this matching occurs depend on the strange quark composition of the corresponding mesons. The topological susceptibility shows a sharp decrease after the chiral transition, signalling the vanishing of the U(1)T<sub>A</sub> anomaly for large temperatures. |
| format |
Articulo Articulo |
| author |
Contrera, Gustavo Aníbal Gómez Dumm, Daniel Alberto Scoccola, Norberto Nerio |
| author_facet |
Contrera, Gustavo Aníbal Gómez Dumm, Daniel Alberto Scoccola, Norberto Nerio |
| author_sort |
Contrera, Gustavo Aníbal |
| title |
Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop |
| title_short |
Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop |
| title_full |
Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop |
| title_fullStr |
Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop |
| title_full_unstemmed |
Meson properties at finite temperature in a three flavor nonlocal chiral quark model with Polyakov loop |
| title_sort |
meson properties at finite temperature in a three flavor nonlocal chiral quark model with polyakov loop |
| publishDate |
2010 |
| url |
http://sedici.unlp.edu.ar/handle/10915/126172 |
| work_keys_str_mv |
AT contreragustavoanibal mesonpropertiesatfinitetemperatureinathreeflavornonlocalchiralquarkmodelwithpolyakovloop AT gomezdummdanielalberto mesonpropertiesatfinitetemperatureinathreeflavornonlocalchiralquarkmodelwithpolyakovloop AT scoccolanorbertonerio mesonpropertiesatfinitetemperatureinathreeflavornonlocalchiralquarkmodelwithpolyakovloop |
| bdutipo_str |
Repositorios |
| _version_ |
1764820450166177793 |