Compact Star Properties from an Extended Linear Sigma Model

Compact Star Properties from an Extended Linear Sigma Model

The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations of compact stars. Using the equation of state given by the (axial-)vector meson extended linear sigma model, we determine the mass&#...

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Main Authors: János Takátsy, Péter Kovács, Zsolt Szép, György Wolf
Format: Article
Language:English
Published: MDPI AG 2019-07-01
Series:Universe
Subjects:
dense baryonic matter
TOV equations
mass–radius relations
chiral effective models
Online Access:https://www.mdpi.com/2218-1997/5/7/174
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spelling doaj-dbf70de36b4e42b28413d992071bbc4b2020-11-24T20:43:21ZengMDPI AGUniverse2218-19972019-07-015717410.3390/universe5070174universe5070174Compact Star Properties from an Extended Linear Sigma ModelJános Takátsy0Péter Kovács1Zsolt Szép2György Wolf3Institute of Physics, ELTE Eötvös University, H-1117 Budapest, HungaryInstitute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, HungaryMTA-ELTE Theoretical Physics Research Group, H-1117 Budapest, HungaryInstitute for Particle and Nuclear Physics, Wigner Research Centre for Physics, Hungarian Academy of Sciences, H-1525 Budapest, HungaryThe equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations of compact stars. Using the equation of state given by the (axial-)vector meson extended linear sigma model, we determine the mass−radius relation and study whether these restrictions are satisfied under the assumption that most of the star is filled with quark matter. We also compare the mass−radius sequence with those given by the equations of state of somewhat simpler models.https://www.mdpi.com/2218-1997/5/7/174dense baryonic matterTOV equationsmass–radius relationschiral effective models
collection DOAJ
language English
format Article
sources DOAJ
author János Takátsy
Péter Kovács
Zsolt Szép
György Wolf
spellingShingle János Takátsy
Péter Kovács
Zsolt Szép
György Wolf
Compact Star Properties from an Extended Linear Sigma Model
Universe
dense baryonic matter
TOV equations
mass–radius relations
chiral effective models
author_facet János Takátsy
Péter Kovács
Zsolt Szép
György Wolf
author_sort János Takátsy
title Compact Star Properties from an Extended Linear Sigma Model
title_short Compact Star Properties from an Extended Linear Sigma Model
title_full Compact Star Properties from an Extended Linear Sigma Model
title_fullStr Compact Star Properties from an Extended Linear Sigma Model
title_full_unstemmed Compact Star Properties from an Extended Linear Sigma Model
title_sort compact star properties from an extended linear sigma model
publisher MDPI AG
series Universe
issn 2218-1997
publishDate 2019-07-01
description The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations of compact stars. Using the equation of state given by the (axial-)vector meson extended linear sigma model, we determine the mass−radius relation and study whether these restrictions are satisfied under the assumption that most of the star is filled with quark matter. We also compare the mass−radius sequence with those given by the equations of state of somewhat simpler models.
topic dense baryonic matter
TOV equations
mass–radius relations
chiral effective models
url https://www.mdpi.com/2218-1997/5/7/174
work_keys_str_mv AT janostakatsy compactstarpropertiesfromanextendedlinearsigmamodel
AT peterkovacs compactstarpropertiesfromanextendedlinearsigmamodel
AT zsoltszep compactstarpropertiesfromanextendedlinearsigmamodel
AT gyorgywolf compactstarpropertiesfromanextendedlinearsigmamodel
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