Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model

Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model

We study local and non-local Polyakov Nambu-Jona-Lasinio models and analyze their respective phase transition diagram. We construct hybrid stars using the zero temperature limit of the local and non-local versions of Nambu-Jona-Lasinio model for quark matter and the modern GM1(L) parametrization of...

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Main Authors: Ignacio Francisco Ranea-Sandoval, Milva Gabriela Orsaria, Germán Malfatti, Daniela Curin, Mauro Mariani, Gustavo Aníbal Contrera, Octavio Miguel Guilera
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Symmetry
Subjects:
NJL model
quark matter
hybrid stars
stellar oscillations
Online Access:https://www.mdpi.com/2073-8994/11/3/425
id doaj-42b389d4c7844abaa0f275272ce3d187
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spelling doaj-42b389d4c7844abaa0f275272ce3d1872020-11-25T00:32:56ZengMDPI AGSymmetry2073-89942019-03-0111342510.3390/sym11030425sym11030425Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL ModelIgnacio Francisco Ranea-Sandoval0Milva Gabriela Orsaria1Germán Malfatti2Daniela Curin3Mauro Mariani4Gustavo Aníbal Contrera5Octavio Miguel Guilera6Grupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 Buenos Aires, ArgentinaGrupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 Buenos Aires, ArgentinaGrupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 Buenos Aires, ArgentinaGrupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 Buenos Aires, ArgentinaGrupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 Buenos Aires, ArgentinaGrupo de Gravitación, Astrofísica y Cosmología, Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900 Buenos Aires, ArgentinaInstituto de Astrofísica de La Plata, CONICET-UNLP, 1900 Buenos Aires, ArgentinaWe study local and non-local Polyakov Nambu-Jona-Lasinio models and analyze their respective phase transition diagram. We construct hybrid stars using the zero temperature limit of the local and non-local versions of Nambu-Jona-Lasinio model for quark matter and the modern GM1(L) parametrization of the non-linear relativistic mean field model for hadronic matter. We compare our models with data from PSR J1614-2230 and PSR J0343+0432 and also from GW170817 and its electromagnetic counterpart GRB170817A and AT2017gfo. We study observational signatures of the appearance of a mixed phase as a result of modeling a phase transition that mimics the Gibbs formalism and compare the results with the sharp first-order phase transition obtained using the Maxwell construction. We also study in detail the <i>g</i>-mode associated with discontinuities in the equation of state, and calculate non-radial oscillation modes using relativistic Cowling approximation.https://www.mdpi.com/2073-8994/11/3/425NJL modelquark matterhybrid starsstellar oscillations
collection DOAJ
language English
format Article
sources DOAJ
author Ignacio Francisco Ranea-Sandoval
Milva Gabriela Orsaria
Germán Malfatti
Daniela Curin
Mauro Mariani
Gustavo Aníbal Contrera
Octavio Miguel Guilera
spellingShingle Ignacio Francisco Ranea-Sandoval
Milva Gabriela Orsaria
Germán Malfatti
Daniela Curin
Mauro Mariani
Gustavo Aníbal Contrera
Octavio Miguel Guilera
Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
Symmetry
NJL model
quark matter
hybrid stars
stellar oscillations
author_facet Ignacio Francisco Ranea-Sandoval
Milva Gabriela Orsaria
Germán Malfatti
Daniela Curin
Mauro Mariani
Gustavo Aníbal Contrera
Octavio Miguel Guilera
author_sort Ignacio Francisco Ranea-Sandoval
title Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
title_short Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
title_full Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
title_fullStr Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
title_full_unstemmed Effects of Hadron-Quark Phase Transitions in Hybrid Stars within the NJL Model
title_sort effects of hadron-quark phase transitions in hybrid stars within the njl model
publisher MDPI AG
series Symmetry
issn 2073-8994
publishDate 2019-03-01
description We study local and non-local Polyakov Nambu-Jona-Lasinio models and analyze their respective phase transition diagram. We construct hybrid stars using the zero temperature limit of the local and non-local versions of Nambu-Jona-Lasinio model for quark matter and the modern GM1(L) parametrization of the non-linear relativistic mean field model for hadronic matter. We compare our models with data from PSR J1614-2230 and PSR J0343+0432 and also from GW170817 and its electromagnetic counterpart GRB170817A and AT2017gfo. We study observational signatures of the appearance of a mixed phase as a result of modeling a phase transition that mimics the Gibbs formalism and compare the results with the sharp first-order phase transition obtained using the Maxwell construction. We also study in detail the <i>g</i>-mode associated with discontinuities in the equation of state, and calculate non-radial oscillation modes using relativistic Cowling approximation.
topic NJL model
quark matter
hybrid stars
stellar oscillations
url https://www.mdpi.com/2073-8994/11/3/425
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AT mauromariani effectsofhadronquarkphasetransitionsinhybridstarswithinthenjlmodel
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