| Thème(s) : |
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Physique/Physique Nucléaire Théorique
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| Titre : |
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Phase transition toward strange matter |
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| Auteur : |
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F. Gulminelli1, Ad. R. Raduta, M. Oertel2 |
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| Laboratoire : |
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| équipe(s) de recherche : |
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Physique théorique |
| Résumé : |
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The phase diagram of a system constituted of neutrons and Λ hyperons in thermal equilibrium is evaluated in the mean-field approximation. It is shown that this simple system exhibits a complex phase diagram with first- and second-order phase transitions. Due to the generic presence of attractive and repulsive couplings, the existence of phase transitions involving strangeness appears independent of the specific interaction model. In addition we will show under which conditions a phase transition towards strange matter at high density exists, which is expected to persist even within a complete treatment including all the different strange and nonstrange baryon states. The impact of this transition on the composition of matter in the inner core of neutron stars is discussed. |
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| Type de publication : |
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Articles dans des revues avec comité de lecture |
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Date de publication
ou d'écriture : |
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2012 |
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| Nom du périodique : |
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| Physical Review C (Phys. Rev. C) |
| Publisher |
American Physical Society |
| ISSN |
0556-2813 (eISSN : 1089-490X) |
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| Volume : |
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86 |
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| Page/Article : |
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025805 |
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| Classification PACS : |
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26.50.+x, 26.60.-c, 21.65.Mn, 64.10.+h |
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