Unified interacting quark matter and its astrophysical implications

  title={Unified interacting quark matter and its astrophysical implications},
  author={Chen Zhang and Robert B. Mann},
  journal={Physical Review D},
We investigate interacting quark matter (IQM), including the perturbative QCD correction and color superconductivity, for both up-down quark matter ($ud$QM) and strange quark matter (SQM). We first derive an equation of state (EOS) unifying all cases by a simple reparametrization and rescaling, through which we manage to maximally reduce the number of degrees of freedom. We find, in contrast to the conventional EOS $p=1/3(\rho-4B_{\rm eff})$ for non-interacting quark matter, that taking the… 

Figures from this paper

Bayesian Inference of Strange Star Equation of State Using the GW170817 and GW190425 Data
The observations of compact star inspirals from LIGO/Virgo provide a valuable tool to study the highly uncertain equation of state (EOS) of dense matter at the densities in which the compact stars
Extremal Instability for Topological Black Holes
The basic idea underlying the Weak Gravity Conjecture is that extremal black holes must always be “unstable”, in the sense that they should slowly decay by emitting either particles or smaller black
Neutron star structure with a new force between quarks
The discovery of nondiffuse sources of gravitational waves through compact-object mergers opens new prospects for the study of physics beyond the Standard Model. In this paper, we study the effects
Probing the Nuclear Equation of State from the Existence of a ∼2.6 M⊙ Neutron Star: The GW190814 Puzzle
This work examines possible constraints on the nuclear equation of state inferred from the consideration that the low mass companion is a slow or rapidly rotating neutron star, and systematically studies the tidal deformability of a possible high mass candidate existing as an individual star or as a component one in a binary neutron star system.
Properties of strange quark matter and strange quark stars
  • M. Kumari, Arvind Kumar
  • The European Physical Journal C
  • 2021
A Polyakov chiral $$\text {SU(3)}$$ SU(3) quark mean-field (PCQMF) model is applied to study the properties of strange quark matter (SQM) and strange quark star (SQS) in $$\beta $$ β
Stable Up-Down Quark Matter Nuggets, Quark Star Crusts, and a New Family of White Dwarfs
The possible existence of stable up-down quark matter (udQM) was recently proposed, and it was shown that the properties of udQM stars are consistent with various pulsar observations. In this work we
A Brief Review of Chiral Chemical Potential and Its Physical Effects
It is proposed for the first time that quark stars are likely to be a natural laboratory for testing the destruction of strong interaction CP.
Modeling a 2.5M⊙ compact star with quark matter
The detection of an unexpected $\sim 2.5 M_{\odot}$ component in the gravitational wave event GW190814 has puzzled the community of High-Energy astrophysicists, since in the absence of further
QCD color superconductivity in compact stars: Color-flavor locked quark star candidate for the gravitational-wave signal GW190814
At sufficiently high densities and low temperatures matter is expected to behave as a degenerate Fermi gas of quarks forming Cooper pairs, namely a color superconductor, as was originally suggested


LIGO Scientific and Virgo
  • Phys. Rev. Lett. 119,
  • 2017
  • J. Lett. 887, no.1, L24
  • 2019
  • J. 860, 139
  • 2018
  • Rev. D 97, no. 8, 083015
  • 2018
  • Rev. Lett. 120, 222001
  • 2018
First Search for Dyons with the Full MoEDAL Trapping Detector in 13 TeV pp Collisions.
On the basis of a Drell-Yan production model, dyons with a magnetic charge ranging up to five Dirac charges (5g_{D}) and an electric charge up to 200 times the fundamental electric charge for mass limits in the range 870-3120 GeV are excluded.
MoEDAL Collaboration)
  • Phys. Rev. Lett. 126,
  • 2021
Comment on “Tidal Love numbers of neutron and self-bound quark stars”
We comment on the paper of S. Postnikov et al. in Phys. Rev. D 82, 024016 (2010) and give a modified formula that needs to be taken into account when calculating the tidal Love number of neutron
GW190425: Observation of a Compact Binary Coalescence with Total Mass $\sim 3.4 M_{\odot}$
  • 2020
GW190425: Observation of a Compact Binary Coalescence with Total Mass ∼ 3.4 M ⊙
On 2019 April 25, the LIGO Livingston detector observed a compact binary coalescence with signal-to-noise ratio 12.9. The Virgo detector was also taking data that did not contribute to detection due