Neutron Stars with Bose-Einstein Condensation of Antikaons as MIT Bags
We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a kaon with\(\sigma^*\) and \(\phi\) in order to describe the interaction of\(s\)-quarks in hyperonic matter in the framework of the modifiedquark-meson coupling model. The coup...
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| Abstract | We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a kaon with\(\sigma^*\) and \(\phi\) in order to describe the interaction of\(s\)-quarks in hyperonic matter in the framework of the modifiedquark-meson coupling model. The coupling constant \(g'^{B_K}_\sigma\)in the density-dependent bag constant \(B(\sigma)\) is treated as afree parameter to reproduce the optical potential of a kaon in asymmetric matter and all other couplings are determined by usingSU(6) symmetry and the quark counting rule. With various values ofthe kaon potential, we calculate the effective mass of a kaon inmedium to compare it with that of a point-like kaon. We thencalculate the population of octet baryons, leptons and \(K^-\) and theequation of state for neutron star matter. The results show thatkaon condensation in hyperonic matter is sensitive to the \(s\)-quarkinteraction and also to the way of treating the kaon. The mass andthe radius of a neutron star are obtained by solving theTolmann-Oppenheimer-Volkoff equation. |
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| AbstractList | We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a kaon with\(\sigma^*\) and \(\phi\) in order to describe the interaction of\(s\)-quarks in hyperonic matter in the framework of the modifiedquark-meson coupling model. The coupling constant \(g'^{B_K}_\sigma\)in the density-dependent bag constant \(B(\sigma)\) is treated as afree parameter to reproduce the optical potential of a kaon in asymmetric matter and all other couplings are determined by usingSU(6) symmetry and the quark counting rule. With various values ofthe kaon potential, we calculate the effective mass of a kaon inmedium to compare it with that of a point-like kaon. We thencalculate the population of octet baryons, leptons and \(K^-\) and theequation of state for neutron star matter. The results show thatkaon condensation in hyperonic matter is sensitive to the \(s\)-quarkinteraction and also to the way of treating the kaon. The mass andthe radius of a neutron star are obtained by solving theTolmann-Oppenheimer-Volkoff equation. J. Korean Phys.Soc. 54,1448 (2009) We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a kaon with$\sigma^*$ and $\phi$ in order to describe the interaction of$s$-quarks in hyperonic matter in the framework of the modifiedquark-meson coupling model. The coupling constant $g'^{B_K}_\sigma$in the density-dependent bag constant $B(\sigma)$ is treated as afree parameter to reproduce the optical potential of a kaon in asymmetric matter and all other couplings are determined by usingSU(6) symmetry and the quark counting rule. With various values ofthe kaon potential, we calculate the effective mass of a kaon inmedium to compare it with that of a point-like kaon. We thencalculate the population of octet baryons, leptons and $K^-$ and theequation of state for neutron star matter. The results show thatkaon condensation in hyperonic matter is sensitive to the $s$-quarkinteraction and also to the way of treating the kaon. The mass andthe radius of a neutron star are obtained by solving theTolmann-Oppenheimer-Volkoff equation. |
| Author | Hong, S W Hyun, C H Ryu, C Y |
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| BackLink | https://doi.org/10.3938/jkps.54.1448$$DView published paper (Access to full text may be restricted) https://doi.org/10.48550/arXiv.1004.5198$$DView paper in arXiv |
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| DOI | 10.48550/arxiv.1004.5198 |
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| Snippet | We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a kaon with\(\sigma^*\) and \(\phi\)... J. Korean Phys.Soc. 54,1448 (2009) We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a... |
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| SubjectTerms | Condensation Couplings Leptons Neutron stars Neutrons Physics - Nuclear Theory Quarks |
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| Title | Neutron Stars with Bose-Einstein Condensation of Antikaons as MIT Bags |
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