Tidal Deformation and Radial Pulsations of Neutron Star with Holographic Multiquark Core

Understand

Tidal deformation of neutron star with multiquark core is calculated using nuclear and multiquark equations of state.

• The equation of state of the multiquark phase from the holographic Sakai-Sugimoto~(SS) model is relatively stiff in the low density region and becomes softer at high densities.
• The values of Love number and dimensionless deformation parameter, $k_{2}$ and $\Lambda$, are found to be within the physically viable range under the present constraints.
• Radial pulsation frequencies of the multiquark core for $n=0-5$ modes are calculated for the entire mass range.