Results 41 to 50 of about 1,078 (229)

The Hadron-quark Crossover in Neutron Star within Gaussian Process Regression Method

open access: yesThe Astrophysical Journal, 2022
The equations of state of the neutron star at the hadron-quark crossover region are interpolated with the Gaussian process regression (GPR) method, which can reduce the randomness of present interpolation schemes.
Kaixuan Huang   +3 more
doaj   +1 more source

Stable anisotropic dissipative quark star with tilted observer [PDF]

open access: yes, 2018
This paper is aimed to study spherically symmetric anisotropic dissipative quark star for tilted observer. The corresponding field equations as well as dynamical equations are formulated.
M. Sharif, Sobia Sadiq
core   +1 more source

Chirally Improved Quark Pauli Blocking in Nuclear Matter and Applications to Quark Deconfinement in Neutron Stars

open access: yesParticles, 2020
The relativistic mean field (RMF) model of the nuclear matter equation of state was modified by including the effect of Pauli-blocking owing to quark exchange between the baryons.
David Blaschke   +2 more
doaj   +1 more source

Luminosity of a quark star undergoing torsional oscillations and the problem of [PDF]

open access: yes, 2009
Aims. We discuss whether the winding-up of the magnetic field by differential rotation in a new-born quark star can produce a sufficiently-high, energy, emission rate of sufficiently long duration to explain long gamma-ray bursts. Methods.
Haensel, Pawel   +7 more
core   +1 more source

An exact anisotropic quark star model [PDF]

open access: yes, 2002
We present an exact analytical solution of the gravitational field equations describing a static spherically symmetric anisotropic quark matter distribution.
Harko, T., Mak, MK
core   +2 more sources

From quark drops to quark stars [PDF]

open access: yesThe European Physical Journal A, 2016
We review some recent results about the mechanism of deconfinement of hadronic matter into quark matter in cold neutron stars and protoneutron stars. We discuss the role of finite size effects and the relevance of temperature and density fluctuations on the nucleation process. We also examine the importance of surface effects for mixed phases in hybrid
openaire   +2 more sources

Observability of neutron stars with quarks [PDF]

open access: yesNuclear Physics A, 2003
4 pages, 1 figure, uses espcrc1.sty (included)
Prakash, Madappa   +3 more
openaire   +2 more sources

Role of hyperons on the hadron-star to quark-star conversion mechanism [PDF]

open access: yes, 2005
We study the role played by hyperons on the hadron-star to quark-star conversion mechanism proposed recently by Berezhiani and collaborators. We find that the quantum nucleation of a quark matter drop inside hadron matter is faster when the presence of ...
BOMBACI, IGNAZIO   +5 more
core   +1 more source

Electrical neutrality and $$\beta $$ β -equilibrium conditions in dense quark matter: generation of charged pion condensation by chiral imbalance

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
The phase diagram of dense quark matter with chiral imbalance is considered with the conditions of electric neutrality and $$\beta $$ β -equilibrium. It has been shown recently that chiral imbalance can generate charged pion condensation (PC) in dense ...
T. G. Khunjua   +2 more
doaj   +1 more source

Recent results on cold-QCD from RHIC [PDF]

open access: yesEPJ Web of Conferences, 2020
Polarized proton-proton collisions at the Relativistic Heavy Ion Collider (RHIC) provide unique opportunities to study the spin structure of the nucleon.
Xu Qinghua
doaj   +1 more source

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