Vector-Interaction-Enhanced Bag Model
A commonly applied quark matter model in astrophysics is the thermodynamic bag model (tdBAG). The original MIT bag model approximates the effect of quark confinement, but does not explicitly account for the breaking of chiral symmetry, an important property of Quantum Chromodynamics (QCD). It furthe...
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| Format: | Article |
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MDPI AG
2018-02-01
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| Series: | Universe |
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| Online Access: | http://www.mdpi.com/2218-1997/4/2/30 |
| _version_ | 1798003808247218176 |
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| author | Mateusz Cierniak Thomas Klähn Tobias Fischer Niels-Uwe F. Bastian |
| author_facet | Mateusz Cierniak Thomas Klähn Tobias Fischer Niels-Uwe F. Bastian |
| author_sort | Mateusz Cierniak |
| collection | DOAJ |
| description | A commonly applied quark matter model in astrophysics is the thermodynamic bag model (tdBAG). The original MIT bag model approximates the effect of quark confinement, but does not explicitly account for the breaking of chiral symmetry, an important property of Quantum Chromodynamics (QCD). It further ignores vector repulsion. The vector-interaction-enhanced bag model (vBag) improves the tdBAG approach by accounting for both dynamical chiral symmetry breaking and repulsive vector interactions. The latter is of particular importance to studies of dense matter in beta-equilibriumto explain the two solar mass maximum mass constraint for neutron stars. The model is motivated by analyses of QCD based Dyson-Schwinger equations (DSE), assuming a simple quark-quark contact interaction. Here, we focus on the study of hybrid neutron star properties resulting from the application of vBag and will discuss possible extensions. |
| first_indexed | 2024-04-11T12:13:37Z |
| format | Article |
| id | doaj.art-25cc281c635a472fa1aa24bdcfca2170 |
| institution | Directory Open Access Journal |
| issn | 2218-1997 |
| language | English |
| last_indexed | 2024-04-11T12:13:37Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Universe |
| spelling | doaj.art-25cc281c635a472fa1aa24bdcfca21702022-12-22T04:24:28ZengMDPI AGUniverse2218-19972018-02-01423010.3390/universe4020030universe4020030Vector-Interaction-Enhanced Bag ModelMateusz Cierniak0Thomas Klähn1Tobias Fischer2Niels-Uwe F. Bastian3Institute of Theoretical Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, PolandDepartment of Physics and Astronomy, California State University, Long Beach, CA 90840, USAInstitute of Theoretical Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, PolandInstitute of Theoretical Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, PolandA commonly applied quark matter model in astrophysics is the thermodynamic bag model (tdBAG). The original MIT bag model approximates the effect of quark confinement, but does not explicitly account for the breaking of chiral symmetry, an important property of Quantum Chromodynamics (QCD). It further ignores vector repulsion. The vector-interaction-enhanced bag model (vBag) improves the tdBAG approach by accounting for both dynamical chiral symmetry breaking and repulsive vector interactions. The latter is of particular importance to studies of dense matter in beta-equilibriumto explain the two solar mass maximum mass constraint for neutron stars. The model is motivated by analyses of QCD based Dyson-Schwinger equations (DSE), assuming a simple quark-quark contact interaction. Here, we focus on the study of hybrid neutron star properties resulting from the application of vBag and will discuss possible extensions.http://www.mdpi.com/2218-1997/4/2/30Quantum Chromodynamicsdense mattervector interactionneutron stars |
| spellingShingle | Mateusz Cierniak Thomas Klähn Tobias Fischer Niels-Uwe F. Bastian Vector-Interaction-Enhanced Bag Model Universe Quantum Chromodynamics dense matter vector interaction neutron stars |
| title | Vector-Interaction-Enhanced Bag Model |
| title_full | Vector-Interaction-Enhanced Bag Model |
| title_fullStr | Vector-Interaction-Enhanced Bag Model |
| title_full_unstemmed | Vector-Interaction-Enhanced Bag Model |
| title_short | Vector-Interaction-Enhanced Bag Model |
| title_sort | vector interaction enhanced bag model |
| topic | Quantum Chromodynamics dense matter vector interaction neutron stars |
| url | http://www.mdpi.com/2218-1997/4/2/30 |
| work_keys_str_mv | AT mateuszcierniak vectorinteractionenhancedbagmodel AT thomasklahn vectorinteractionenhancedbagmodel AT tobiasfischer vectorinteractionenhancedbagmodel AT nielsuwefbastian vectorinteractionenhancedbagmodel |