Strangeness in Compact Stars

Abstract

We discuss the impact of strange hadrons, in particular hyperons, on the gross features of compact stars and on core-collapse supernovae. Hyperons are likely to be the first exotic species which appears around twice normal nuclear matter density in the core of neutron stars. Their presence largely influences the mass-radius relation of compact stars, the maximum mass, the cooling of neutron stars, the stability with regard to the emission of gravitational waves from rotation-powered neutron stars and the possible early onset of the QCD phase transition in core-collapse supernovae. We outline also the constraints from subthreshold kaon production in heavy-ion collisions for the maximum possible mass of neutron stars.

8 pages, invited talk given at the 10th International Conference on Hypernuclear and Strange Particle Physics (HYP-X) September 14-18, 2009, Tokai, Ibaraki, Japan, ref. and acknowledgment added

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Cited by in corpus (35)

• Hyperon-nucleon interaction at next-to-leading order in chiral effective field theory
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• Baryon-Baryon Interactions in the Flavor SU(3) Limit from Full QCD Simulations on the Lattice
• Hyperon-Nucleon Interactions and the Composition of Dense Nuclear Matter from Quantum Chromodynamics
• Strangeness nuclear physics: a critical review on selected topics
• Quark-Meson-Coupling (QMC) model for finite nuclei, nuclear matter and beyond
• Evidence for 6ΛH
• Mean field approaches for ${\Xi }^{-}$ hypernuclei and current experimental data
• Quark-Meson Coupling Model, Nuclear Matter Constraints and Neutron Star Properties
• Shell-model predictions for double-Lambda hypernuclei
• Thermodynamics of (2+1)-flavor strongly interacting matter at nonzero isospin
• Making a soft relativistic mean-field equation of state stiffer at high density
• Hadron interactions in lattice QCD
• Lattice QCD approach to Nuclear Physics
• Green's function relativistic mean field theory for $\Lambda$ hypernuclei
• Formation of double-$\Lambda$ hypernuclei at PANDA
• Density Functional approach for multi-strange hypernuclei: competition between $\Lambda$ and ${\Xi }^{0,-}$ hyperons
• Implications of the fermion vacuum term in the extended SU(3) Quark Meson model on compact stars properties
• Study of ${\Xi }^{-}$ hypernuclei in the Skyrme-Hartree-Fock approach
• Rotating hybrid stars with the Dyson-Schwinger quark model
• $\Lambda \Lambda$ pairing in multi-strange hypernuclei
• Microscopic Approach to Nucleon Spectra in Hypernuclear Non-Mesonic Weak Decay
• Production of cascade hypernuclei via the (K-,K+) reaction within a quark-meson coupling model
• The contributions of the vector-channel at finite isospin chemical potential with the self-consistent mean field approximation
• Hyperon puzzle and the RMF model with scaled hadron masses and coupling constants
• QCD sum rules for the baryon octet in nuclear matter
• Experimental nuclear astrophysics in Italy
• On the effect of the Delta(1232) in hypernuclear non-mesonic weak decay: a microscopic approach
• Effects of Finite Temperature and Pairing Correlations in Multi-$\Lambda$ Hypernuclei
• $p$-shell hypernuclear structures using the Gogny-interaction shell model
• Nonmesonic Weak Decay of $\Lambda$ Hypernuclei: The Three--Nucleon Induced Mode
• Hyperons in Neutron Stars across the observed mass range: Insights from realistic $\Lambda$-N and $\Lambda$-$\Lambda$ interactions within a Microscopic Framework
• ${\Xi }^{-}$ hyperon and hypernuclear production in the $(K^{-},K^{+})$ reaction on nucleon and nuclei in a field theoretical model
• Discrimination of $\Sigma$-nucleus potentials in the angular distribution of elastic scattering of ${\Sigma }^{-}$ hyperons from nuclei
• Exact solution of equations for proton localization in neutron star matter