Strongly interacting matter exhibits deconfined behavior in massive neutron stars
In: The work has been supported by the Finnish Cultural Foundation (EA), the Academy of Finland grants no. 1303622 and 354533 (EA, JH, and AV), the European Research Council grant no. 725369 (EA, JH, and AV), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – project-ID 279384907 – SFB 1245 (TG), the State of Hesse within the Research Cluster ELEMENTS, project-ID 500/10.006 (TG), and a joint Columbia University/Flatiron Institute Research Fellowship (JN). The authors also acknowledge CSC - IT Center for Science, Finland, for computational resources (project 2003485).; Annala , E , Gorda , T , Hirvonen , J , Komoltsev , O , Kurkela , A , Nättilä , J & Vuorinen , A 2023 , ' Strongly interacting matter exhibits deconfined behavior in massive neutron stars ' , Nature Communications , vol. 14 , no. 1 , 8451 85180134531; 27d8bfda-ebdd-40b0-9299-41650219a8df;
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Zugriff:
Neutron-star cores contain matter at the highest densities in our Universe. This highly compressed matter may undergo a phase transition where nuclear matter melts into deconfined quark matter, liberating its constituent quarks and gluons. Quark matter exhibits an approximate conformal symmetry, predicting a specific form for its equation of state (EoS), but it is currently unknown whether the transition takes place inside at least some physical neutron stars. Here, we quantify this likelihood by combining information from astrophysical observations and theoretical calculations. Using Bayesian inference, we demonstrate that in the cores of maximally massive stars, the EoS is consistent with quark matter. We do this by establishing approximate conformal symmetry restoration with high credence at the highest densities probed and demonstrating that the number of active degrees of freedom is consistent with deconfined matter. The remaining likelihood is observed to correspond to EoSs exhibiting phase-transition-like behavior, treated as arbitrarily rapid crossovers in our framework. ; Peer reviewed
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Strongly interacting matter exhibits deconfined behavior in massive neutron stars
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Autor/in / Beteiligte Person: | Annala, Eemeli ; Gorda, Tyler ; Hirvonen, Joonas ; Komoltsev, Oleg ; Kurkela, Aleksi ; Nättilä, Joonas ; Vuorinen, Aleksi ; Helsinki Institute of Physics ; Particle Physics and Astrophysics ; Department of Physics |
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Quelle: | The work has been supported by the Finnish Cultural Foundation (EA), the Academy of Finland grants no. 1303622 and 354533 (EA, JH, and AV), the European Research Council grant no. 725369 (EA, JH, and AV), the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – project-ID 279384907 – SFB 1245 (TG), the State of Hesse within the Research Cluster ELEMENTS, project-ID 500/10.006 (TG), and a joint Columbia University/Flatiron Institute Research Fellowship (JN). The authors also acknowledge CSC - IT Center for Science, Finland, for computational resources (project 2003485).; Annala , E , Gorda , T , Hirvonen , J , Komoltsev , O , Kurkela , A , Nättilä , J & Vuorinen , A 2023 , ' Strongly interacting matter exhibits deconfined behavior in massive neutron stars ' , Nature Communications , vol. 14 , no. 1 , 8451 85180134531; 27d8bfda-ebdd-40b0-9299-41650219a8df; |
Veröffentlichung: | Nature Publishing Group, 2024 |
Medientyp: | academicJournal |
ISBN: | 978-85-18-01345-3 (print) ; 85-18-01345-3 (print) |
DOI: | 10.1038/s41467-023-44051-y |
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