Scalarization of neutron stars with realistic equations of state

Abstract

We consider the effect of scalarization on static and slowly rotating neutron stars for a wide variety of realistic equations of state, including pure nuclear matter, nuclear matter with hyperons, hybrid nuclear and quark matter, and pure quark matter. We analyze the onset of scalarization, presenting a universal relation for the critical coupling parameter versus compactness. We find that the onset and the magnitude of the scalarization are strongly correlated with the value of the gravitational potential (the metric component $g_{tt}$) at the center of the star. We also consider the moment-of-inertia--compactness relations and confirm universality for the nuclear matter, hyperon and hybrid equations of state.

17 pages, 9 figures, matches version published in PRD

References in corpus (12)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• Constraints on a phenomenologically parameterized neutron-star equation of state
• Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. XII: Stiffness and stability of neutron-star matter
• The relativistic pulsar-white dwarf binary PSR J1738+0333 II. The most stringent test of scalar-tensor gravity
• I-Love-Q, Spontaneously: Slowly Rotating Neutron Stars in Scalar-Tensor Theories
• Scalarized Hairy Black Holes
• Rapidly rotating neutron stars with a massive scalar field - structure and universal relations
• Universal I-Q relations for rapidly rotating neutron and strange stars in scalar-tensor theories
• Orbital and epicyclic frequencies around rapidly rotating compact stars in scalar-tensor theories of gravity
• On the maximum mass limit of neutron stars in scalar-tensor gravity
• The final phase of inspiral of strange quark star binaries

Cited by in corpus (22)

• Spontaneous scalarization
• Polar quasinormal modes of the scalarized Einstein-Gauss-Bonnet black holes
• Maximum Baryon Masses for Static Neutron Stars in $f(R)$ Gravity
• $R^p$ Attractors Static Neutron Star Phenomenology
• Universal Inflationary Attractors Implications on Static Neutron Stars
• Inflationary Attractors Predictions for Static Neutron Stars in the Mass-Gap Region
• Neutron Stars in Scalar-tensor Gravity with Quartic Order Scalar Potential
• Static Neutron Stars Perspective of Quadratic and Induced Inflationary Attractor Scalar-tensor Theories
• Maximal Masses of White Dwarfs for Polytropes in $R^2$ Gravity and Theoretical Constraints
• Axial quasi-normal modes of scalarized neutron stars with massive self-interacting scalar field
• Neutron Star Structure in the Presence of Nonminimally Coupled Scalar Fields
• Gravitational waves from accretion-induced descalarization in massive scalar-tensor theory
• Effective-action model for dynamical scalarization beyond the adiabatic approximation
• Uniqueness of the Inflationary Higgs Scalar for Neutron Stars and Failure of non-inflationary Approximations
• Scalar charges and pulsar-timing observables in the presence of nonminimally coupled scalar fields
• Compact Objects in Alternative Gravities
• Hyperonization in compact stars
• Scalar-Connection Gravity and Spontaneous Scalarization
• Scalarized neutron stars with a highly relativistic core in scalar-tensor gravity
• Higher dimensional Reissner-Nordström black holes supporting static scalar shells
• Gamma-ray emission from primordial black hole-neutron star interaction
• The ghost of vector fields in compact stars