Quark Stars in $D_3$-$D_7$ Holographic Model

Author:

M. Aleixo, C. H. Lenzi, W. de Paula, R. da Rocha

Keyword:

High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Astrophysical Phenomena (astro-ph.HE), Nuclear Theory (nucl-th)

journal:

date:

2023-10-25 16:00:00

Abstract

This work investigates static and dynamical quark star properties within a $D_3-D_7$ holographic model. We solve the Tolman-Oppenheimer-Volkoff equations for the quark matter equation of state obtained from the brane configuration and determine the range of model parameters in which the quark star family mass-radius diagram are compatible with recent NICER observational data for the pulsars PSR J$0030+0451$ and PSR J$0740+6620$. We show that the model supports stable configurations with maximum masses higher than $2$ Solar masses, in line with the inferred masses of the pulsars PSR J$1614-2230$, PSR J$0348+0432$ and PSR J$0740+6620$. Furthermore, we show that for the constituent quark mass ranging from $m=330$ MeV to $m=350$ MeV, the tidal deformability parameter for each component of the binary star system is consistent with the GW170817 event detected by the LIGO-Virgo collaboration.

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