Locating the critical end point using the linear sigma model coupled to quarks.

Alejandro Ayala; J. A. Flores; L. A. Hernández; S. Hernández-Ortiz

doi:10.1051/epjconf/201817202003

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Proceedings

Open Access

EPJ Web of Conferences 172, 02003 (2018)
https://doi.org/10.1051/epjconf/201817202003

Locating the critical end point using the linear sigma model coupled to quarks.

Alejandro Ayala¹^,3, J. A. Flores², L. A. Hernández¹ and S. Hernández-Ortiz¹^*

¹ Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, Apartado Postal 70-543, México Distrito Federal 04510, México.
² Departamento de FÍsica, Facultad de Ciencias, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, 04510 Distrito Federal, México.
³ Centre for Theoretical and Mathematical Physics, and Department of Physics,University of Cape Town, Rondebosch 7700, South Africa.

^* e-mail: saul.hernandezr@correo.nucleares.unam.mx

Published online: 26 January 2018

Abstract

We use the linear sigma model coupled to quarks to compute the effective potential beyond the mean field approximation, including the contribution of the ring diagrams at finite temperature and baryon density. We determine the model couplings and use them to study the phase diagram in the baryon chemical potential-temperature plane and to locate the Critical End Point.

© The Authors, published by EDP Sciences, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).