Holographic QCD in the Veneziano limit and neutron stars

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Jokela , N , Järvinen , M & Remes , J 2019 , ' Holographic QCD in the Veneziano limit and neutron stars ' , Journal of High Energy Physics , vol. 2019 , no. 3 , 041 . https://doi.org/10.1007/JHEP03(2019)041

Title: Holographic QCD in the Veneziano limit and neutron stars
Author: Jokela, Niko; Järvinen, Matti; Remes, Jere
Contributor: University of Helsinki, Particle Physics and Astrophysics
University of Helsinki, Utrecht University
University of Helsinki, Helsinki Institute of Physics
Date: 2019-03-07
Language: eng
Number of pages: 25
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
URI: http://hdl.handle.net/10138/300479
Abstract: We use the holographic V-QCD models to analyse the physics of dense QCD and neutron stars. Accommodating lattice results for thermodynamics of QCD enables us to make generic predictions for the Equation of State (EoS) of the quark matter phase in the cold and dense regime. We demonstrate that the resulting pressure in V-QCD matches well with a family of neutron-star-matter EoSs that interpolate between state-of-the-art theoretical results for low and high density QCD. After implementing the astrophysical constraints, i.e., the largest known neutron star mass and the recent LIGO/Virgo results for the tidal deformability, we analyse the phase transition between the baryonic and quark matter phases. We find that the baryon density nB at the transition is at least 2.9 times the nuclear saturation density ns. The transition is of strongly first order at low and intermediate densities, i.e., for nB/ns ≲ 7.5.
Subject: 114 Physical sciences
115 Astronomy, Space science
Gauge-gravity correspondence
Holography and quark-gluon plasmas
Phase Diagram of QCD
DILATON
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