11-15 July 2016
University of Stavanger
Europe/Oslo timezone

Chiral symmetry restoration from the hadronic regime

14 Jul 2016, 14:00
30m
Ø-130 (University of Stavanger)

Ø-130

University of Stavanger

Arne Rettedal building

Speaker

Angel Gomez Nicola (Universidad Complutense Madrid)

Description

We will present recent results regarding chiral symmetry restoration and other hadronic properties at finite temperature. In particular, we will discuss the interpretation of the temperature dependence of lattice screening masses through Ward identities relating pseudoscalar susceptibilities and quark condensates. Such identities are derived for two and three flavours and studied within the $SU(2)$, $SU(3)$ and $U(3)$ frameworks of Chiral Perturbation Theory, including axial anomaly and $\eta'$ corrections. We will also examine chiral degeneration patterns and the role of the $f_0(500)$ or $\sigma$ state in the saturation of the scalar susceptibility, where our results are consistent with lattice data. The $f_0(500)$ thermal state is generated dynamically from pion scattering and thermal unitarity, both within unitarized ChPT and in other schemes such as that with large number of Goldstone Bosons. Aspects regarding external magnetic fields could also be discussed. Recent references: JHEP 1603 (2016) 186, Phys.Rev. D93 (2016) no.3, 036001.

Primary author

Angel Gomez Nicola (Universidad Complutense Madrid)

Co-authors

Dr Jacobo Ruiz de Elvira (HISKP University Bonn) Prof. John Morales (Universidad Nacional de Colombia) Santiago Cortes (Universidad de los Andes)

Presentation Materials

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