Quark formation and phenomenology in binary neutron-star mergers using V-QCD

  • Using full 3+1 dimensional general-relativistic hydrodynamic simulations of equal- and unequal-mass neutron-star binaries with properties that are consistent with those inferred from the inspiral of GW170817, we perform a detailed study of the quark-formation processes that could take place after merger. We use three equations of state consistent with current pulsar observations derived from a novel finite-temperature framework based on V-QCD, a non-perturbative gauge/gravity model for Quantum Chromodynamics. In this way, we identify three different post-merger stages at which mixed baryonic and quark matter, as well as pure quark matter, are generated. A phase transition triggered collapse already ≲10ms after the merger reveals that the softest version of our equations of state is actually inconsistent with the expected second-long post-merger lifetime of GW170817. Our results underline the impact that multi-messenger observations of binary neutron-star mergers can have in constraining the equation of state of nuclear matter, especially in its most extreme regimes.

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Metadaten
Author:Samuel TootleORCiDGND, Christian EckerORCiD, Konrad TopolskiORCiD, Tuna DemircikORCiD, Matti JärvinenORCiD, Luciano RezzollaORCiDGND
URN:urn:nbn:de:hebis:30:3-838741
URL:https://arxiv.org/abs/2205.05691v1
DOI:https://doi.org/10.48550/arXiv.2205.05691
ArXiv Id:http://arxiv.org/abs/2205.05691v1
Parent Title (German):Reportnummer: APCTP Pre2022 - 007 ; arXiv
Publisher:arXiv
Document Type:Preprint
Language:English
Date of Publication (online):2022/05/11
Date of first Publication:2022/05/11
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2024/04/30
Issue:2205.05691 Version 1
Edition:Version 1
Page Number:15
HeBIS-PPN:518866114
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International