Effect of the $\sigma$-cut potential on the properties of neutron stars with or without a hyperonic core

Abstract

Motivated by the recent observation of high-mass pulsars ($M\simeq 2M_{\odot }$), we employ the $\sigma$-cut potential on the equation of state (EOS) of high-density matter and the properties of neutron stars within the relativistic mean-field (RMF) model using TM1${}^{\ast }$ parameter set. The $\sigma$-cut potential is known to reduce the contributions of the $\sigma$ field, resulting in a stiffer EOS at high densities and hence leading to larger neutron star masses without affecting the properties of nuclear matter at normal saturation density. We also analyzed the effect of the same on pure neutron matter and also on the neutron star matter with and without hyperonic core and compared it with the available theoretical, experimental, and observational data. The corresponding tidal deformability (${\Lambda }_{1.4}$) is also calculated. With the choice of meson-hyperon coupling fixed to hypernuclear potentials, we obtain $\approx 10\%$ increase in mass by employing the $\sigma$-cut potential for $f_s=0.6$. Our results are in good agreement with various experimental constraints and observational data, particularly with the GW170817 data.

arXiv comment7 Pages, 6 Figures and 1 Table (Accepted in Phys. Rev. C)

References in corpus (36)

• Shapiro delay measurement of a two solar mass neutron star
• A Massive Pulsar in a Compact Relativistic Binary
• An accurate nucleon-nucleon potential with charge-independence breaking
• The equation of state for nucleon matter and neutron star structure
• GW170817: Measurements of Neutron Star Radii and Equation of State
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• PSR J0030+0451 Mass and Radius from NICER Data and Implications for the Properties of Neutron Star Matter
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• The Physics of Neutron Stars
• Construction of high-quality Nucleon-Nucleon potential models
• Properties of the binary neutron star merger GW170817
• A NICER View of the Massive Pulsar PSR J0740+6620 Informed by Radio Timing and XMM-Newton Spectroscopy
• Core-collapse supernova equations of state based on neutron star observations
• Constraints on the density dependence of the symmetry energy
• Neutron skins and neutron stars in the multi-messenger era
• Circumstantial evidence for a soft nuclear symmetry energy at supra-saturation densities
• Constraining Neutron-Star Matter with Microscopic and Macroscopic Collisions
• Symmetry Energy II: Isobaric Analog States
• GW170817: constraining the nuclear matter equation of state from the neutron star tidal deformability
• Probing the nuclear equation of state by $K^{+}$ production in heavy ion collisions
• Do hyperons exist in the interior of neutron stars ?
• Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density
• Symmetry energy from elliptic flow in 197Au + 197Au
• Recent Progress in Neutron Star Theory
• Covariant representations of the relativistic Brueckner T-matrix and the nuclear matter problem
• On the transverse momentum distribution of strange hadrons produced in relativistic heavy ion collisions
• Pairing Properties In Relativistic Mean Field Models Obtained From Effective Field Theory
• Stellar properties and nuclear matter constraints
• Neutron star properties and the equation of state of neutron-rich matter
• Making a soft relativistic mean-field equation of state stiffer at high density
• Phase transition and properties of compact star
• Nearly model-independent constraints on dense matter equation of state in a Bayesian approach
• Kaon meson condensate in neutron star matter including hyperons
• Massive neutron star with strangeness in a relativistic mean-field model with a high-density cut-off
• Nuclear symmetry energy with mesonic cross-couplings in the effective chiral model
• Properties of Neutron Stars with hyperon cores in parameterized hydrostatic conditions

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