Results 121 to 130 of about 648,957 (221)

Neutron-quark Stars: Discerning Viable Alternatives for the Higher-density Part of the Equation of State of Compact Stars

The Astrophysical Journal Letters
We investigate binary neutron star (BNS) mergers using general-relativistic numerical simulations with hadronic and hybrid equations of state (EOSs), incorporating the latest observations and theoretical constraints.
Sudipta Hensh, Yong-Jia Huang, Toru Kojo, Luca Baiotti, Kentaro Takami, Shigehiro Nagataki, Hajime Sotani   +6 more
doaj   +1 more source

Strongly interacting quark matter in massive quark stars

Classical and Quantum Gravity
Abstract This paper investigates the properties of strongly coupled matter at high baryon densities (ρ B) in quark stars (QSs). The QS model is based on the density-dependent quark mass (DDQM) framework, modified DDQM (MDDQM) by enhancing the single-gluon interaction to generate higher repulsive pressure.
Adamu Issifu, Franciele M da Silva, Luis C N Santos, Débora P Menezes, Tobias Frederico   +4 more
openaire   +2 more sources

Quark star matter within an extended quasiparticle model

European Physical Journal C: Particles and Fields
In this work, we extend the quasiparticle model to include the chemical potential dependence of the coupling constant g and consider the density-dependent bag constant $$B_m$$ B m in order to satisfy the asymptotic freedom feature.
Peng-Cheng Chu, He Liu, Hong-Ming Liu, Min Ju, Xu-Hao Wu, Ying Zhou, Xiao-Hua Li   +6 more
doaj   +1 more source

Neutron Star masses from the Field Correlator Method Equation of State

EPJ Web of Conferences, 2014
We analyse the hadron-quark phase transition in neutron stars by confronting the hadronic Equation of State (EoS) obtained according to the microscopic Brueckner-Hartree-Fock many body theory, with the quark matter EoS derived within the Field Correlator
Zappalà D., Burgio G. F., Greco V., Plumari S.   +3 more
doaj   +1 more source

Quark and Gluon Form Factors at Three Loops in Perturbative QCD [PDF]

, 2009
We compute the quark and gluon form factors at up to three-loop order within massless perturbative Quantum Chromodynamics by studying the photon-quark-anti-quark vertex and the effective vertex of a Higgs boson and two gluons.
IKIZLERLI, NEHIR
core  

Gravity Wave Phase Shift in a Cold Quark Star with a Nonconvex QCD BZT Shock Wave Van Der Waals Equation of State

Astronomy
We investigate BZT shocks and the QCD phase transition in the dense core of a cold quark star in beta equilibrium subject to the multicomponent van der Waals (MvdW) equation of state (EoS) as a model of internal structure.
Keith Andrew, Eric V. Steinfelds, Kristopher A. Andrew   +2 more
doaj   +1 more source

Quark deconfinement in neutron star cores

, 2007
Whether or not the deconfined quark phase exists in neutron star cores is an open question. We use two realistic effective quark models, the three-flavor Nambu-Jona-Lasinio model and the modified quark-meson coupling model, to describe the neutron star ...
Ma, Chang-Qun, Chun-Yuan Gao, Chang-Qun Ma, Gao, Chun-Yuan   +3 more
core   +1 more source

The Spectrum of Low-p_TJ/ψ in Heavy-Ion Collisions in a Statistical Two-Body Fractal Model. [PDF]

Entropy (Basel), 2023
Ding H, Cheng L, Dai T, Wang E, Zhang WN.   +4 more
europepmc   +1 more source

Strongly interacting matter exhibits deconfined behavior in massive neutron stars. [PDF]

Nat Commun, 2023
Annala E, Gorda T, Hirvonen J, Komoltsev O, Kurkela A, Nättilä J, Vuorinen A.   +6 more
europepmc   +1 more source

The compact neutron star in 4U 1746-37 revisited: Reassessing the mass and radius

Astronomy & Astrophysics
Context. A recent analysis of photospheric radius expansion X-ray bursts from the low-mass X-ray binary 4U 1746-37 reported unusually small mass and radius estimates for the neutron star, suggesting it could be a quark star or quark-cluster star.
Sung Kwang Hyun, Kim Myungkuk, Kim Young-Min, Kwak Kyujin, Lee Chang-Hwan   +4 more
doaj   +1 more source