# Scalar-pseudoscalar meson spectrum in SU(3) PNJL model

Abstract : We investigate the modifications of mesonic properties in a hot medium having in mind to use the mesonic modes as a tool to analyze the restoration of chiral and axial symmetries in the context of the SU(3) Polyakov--Nambu--Jona-Lasinio (PNJL) model. The results lead to the conclusion that the effects of the Polyakov loop are fundamental for reproducing lattice findings. It is found that the restoration of chiral symmetry in the PNJL model occurs in a small range of temperature (smaller that in the Nambu--Jona-Lasinio (NJL)), and the topological susceptibility reproduces well the lattice results around $T/T_c^\chi\approx 1.0$.
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Preprints, Working Papers, ...

http://hal.in2p3.fr/in2p3-00589079
Contributor : Sylvie Flores Connect in order to contact the contributor
Submitted on : Wednesday, April 27, 2011 - 2:24:46 PM
Last modification on : Friday, September 10, 2021 - 1:50:12 PM

### Identifiers

• HAL Id : in2p3-00589079, version 1
• ARXIV : 0907.1972

### Citation

Pedro Costa, M. C. Ruivo, C. A. de Sousa, H. Hansen, W. M. Alberico. Scalar-pseudoscalar meson spectrum in SU(3) PNJL model. 2011. ⟨in2p3-00589079⟩

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