Yifan Song

TL;DR: In this article, the authors describe the structure of neutron stars constructed from the unified equations of states with crossover, and present the current equations of state-called "QHC18" for quark-hadron crossover-in a parametrized form practical for neutron star modeling.

TL;DR: The structure of neutron stars constructed from the unified equations of states with crossover is described, and the parameters of effective quark models are constrained by neutron star mass and radii measurements, in particular favoring large repulsive density-density and attractive diquark pairing interactions.

TL;DR: In this paper, an equation of state for massive neutron stars based on quantum chromodynamics phenomenology was constructed, which satisfies the required stiffness and satisfies constraints from thermodynamics and causality.

TL;DR: In this paper, the authors study the repulsion between quarks in dense quark matter, parametrized by a four-fermion interaction with coupling g_V, in terms of nonperturbative gluon exchange in QCD in the Landau gauge.

TL;DR: In this article, the properties of QCD matter at baryon density n B = 1 − 10 n 0 (n 0 : nuclear saturation density), through the construction of neutron star equations of state that satisfy the neutron star mass-radius constraints as well as physical conditions on the speed of sound, are delineated.