Journal
PHYSICS LETTERS B
Volume 801, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2019.135176
Keywords
-
Funding
- Taiwan Ministry of Science and Technology (MoST) [106-2112-M-003-004-MY3]
- Academia Sinica Career Development Award Program [AS-CDA-105-M06]
- MoST [107-2811-M-003511]
- NCTS
Ask authors/readers for more resources
We use a holographic model of quantum chromodynamics to extract the equation of state (EoS) for the cold nuclear matter of moderate baryon density. This model is based on the Sakai-Sugimoto model in the deconfined Witten's geometry with the additional point-like D4-brane instanton configuration as the holographic baryons. Our EoS takes the following doubly-polytropic form: epsilon = 2.629A(-0.192)p(1.192) + 0.131A(0.544)p(0.456) with A a tunable parameter of order 10(-1), where epsilon and pare the energy density and pressure, respectively. The sound speed satisfies the causality constraint and breaks the sound barrier. We solve the Tolman-Oppenheimer-Volkoff equations for the compact stars and obtain the reasonable compactness for the proper choices of A. Based on these configurations we further calculate the tidal deformability of the single and binary stars. We find our results agree with the inferred values of LIGO/Virgo data analysis for GW170817. (C) 2019 The Authors. Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available