Kaon Condensation in Neutron Star Matter with Hyperons

Abstract

Based on the Kaplan-Nelson Lagrangian, we investigate kaon condensation in dense neutron star matter allowing for the explicit presence of hyperons. Using various models we find that the condensate threshold is sensitive to the behavior of the scalar density; the more rapidly it increases with baryon density, the lower is the threshold for condensation. The presence of hyperons, particularly the ${\Sigma }^{-}$, shifts the threshold for $K^{-}$ condensation to a higher density. In the mean field approach, with hyperons, the condensate amplitude grows sufficiently rapidly that the nucleon effective mass vanishes at a finite density and a satisfactory treatment of the thermodynamics cannot be achieved. Thus, calculations of kaon-baryon interactions beyond the mean field level appear to be necessary.

13 pages, latex, 3 figures by fax/mail from [email protected]

References in corpus (2)

• Composition, Structure and Evolution of Neutron Stars with Kaon Condensates
• Neutron Stars and Nuclei in the Modified Relativistic Hartree Approximation

Cited by in corpus (61)

• Hyperon-rich Matter in Neutron Stars
• Hyperons and massive neutron stars: vector repulsion and SU(3) symmetry
• Hyperon stars in the Brueckner-Bethe-Goldstone theory
• Chiral Unitary approach to meson-meson and meson-baryon interactions and nuclear applications
• Quarkyonic Chiral Spirals
• First Order Kaon Condensate
• The outer crust of non-accreting cold neutron stars
• An Effective Equation of State for Dense Matter with Strangeness
• In-medium Production of Kaons at the Mean-Field Level
• Strangeness in Hadronic Stellar Matter
• Compact stars made of fermionic dark matter
• Kaon Condensation and Dynamical Nucleons in Neutron Stars
• Equation of state of hypernuclear matter: impact of hyperon--scalar-meson couplings
• Strange nuclear matter within Brueckner-Hartree-Fock Theory
• Hypernuclear matter in a complete SU(3) symmetry group
• A third family of super dense stars in the presence of antikaon condensates
• S-wave Meson-Nucleon Interactions and the Meson Mass in Nuclear Matter from Chiral Effective Lagrangians
• Antikaon condensation in neutron stars
• Kaonic nuclei excited by the $(K^{-},N)$ reaction
• Antikaon condensation and the metastability of protoneutron stars
• Strangeness in Compact Stars
• Gravitational Waves from Phase Transition of Accreting Neutron Stars
• Astrophysical implications on hyperon couplings and hyperon star properties with relativistic equations of states
• Kaon properties in (proto)neutron stars
• Multi-$\bar{K}$ nuclei and kaon condensation
• Microscopic three-body forces and kaon condensation in cold neutrino-trapped matter
• Protoneutron stars in the Brueckner-Hartree-Fock approach and finite-temperature kaon condensation
• Nuclear Three-body Force Effect on a Kaon Condensate in Neutron Star Matter
• Neutrino Scattering in a Newly Born Neutron Star
• Hadron-quark phase transition in asymmetric matter with boson condensation
• Many-body forces in magnetic neutron stars
• The internal composition of proto-neutron stars under strong magnetic fields
• Deducing Neutron Star Equation of State Parameters Directly From Telescope Spectra with Uncertainty-Aware Machine Learning
• Interplay between kaon condensation and hyperons in highly dense matter
• Bulk viscosity in kaon condensed matter
• Isospin Properties of ($K^{-}$, $N$) Reactions for the Formation of Deeply-bound Antikaonic Nuclei
• Kaon Condensation and Lambda-Nucleon Loop in the Relativistic Mean-Field Approach
• Multi-antikaonic nuclei in the relativistic mean-field theory
• The Role of Baryon Structure in Neutron Stars
• Nonequilibrium Weak Processes in Kaon Condensation II - Kinetics of condensation ---
• Critical temperature of antikaon condensation in nuclear matter
• Kaon-condensed hypernuclei as highly dense self-bound objects
• Neural Simulation-Based Inference of the Neutron Star Equation of State directly from Telescope Spectra
• Kaonic modes in hyperonic matter and p-wave kaon condensation
• Hyperon and nuclear symmetry energy in the neutron star
• Nonequilibrium Weak Processes in Kaon Condensation I --- Reaction rate for the thermal kaon process ---
• Kaon Zero-Point Fluctuations in Neutron Star Matter
• Neutrino emissivity under neutral kaon condensation
• Charged Ising Model of Neutron Star Matter
• The attribute of rotational profile to the hyperon puzzle in the prediction of heaviest compact star
• Equation of state of hypernuclear matter: tuning hyperon--scalar-meson couplings
• Melting of antikaon condensate in protoneutron stars
• Shear viscosity in antikaon condensed matter
• Effect of Shear viscosity on the nucleation of antikaon condensed matter in neutron stars
• Kaon mass in dense matter
• Hyperon-rich Matter and Kaons in Matter
• Shear viscosity and the nucleation of antikaon condensed matter in protoneutron stars
• Pygmies, Giants, and Skins
• Antikaons in neutron star studied with recent versions of relativistic mean-field models
• Fine structure of giant resonances: What can be learned
• Towards a novel energy density functional for beyond-mean-field calculations with pairing and deformation