scholarly journals Lattice QCD-based equations of state at vanishing net-baryon density

2014 ◽  
Vol 929 ◽  
pp. 157-168 ◽  
Author(s):  
M. Bluhm ◽  
P. Alba ◽  
W. Alberico ◽  
A. Beraudo ◽  
C. Ratti
Keyword(s):  
Lattice Qcd ◽  
Equations Of State ◽  
Baryon Density

scholarly journals Equations of state based on recent lattice QCD results at vanishing net-baryon density

2014 ◽  
Vol 527 ◽  
pp. 012014
Author(s):  
P Alba ◽  
W Alberico ◽  
A Beraudo ◽  
M Bluhm ◽  
C Ratti
Keyword(s):  
Lattice Qcd ◽  
Equations Of State ◽  
Baryon Density

scholarly journals Neutral Pion Pole Mass Calculation in a Strong Magnetic Field: Lattice QCD Versus NJL Model

2017 ◽  
Vol 45 ◽  
pp. 1760060 ◽  
Author(s):  
Ricardo L. S. Farias ◽  
Sidney S. Avancini ◽  
Marcus Benghi Pinto ◽  
William R. Tavares ◽  
Varese S. Timóteo
Keyword(s):  
Magnetic Field ◽  
Lattice Qcd ◽  
Neutral Pion ◽  
Baryon Density ◽  
Pion Pole ◽  
Meson Mass ◽  
Pole Mass ◽  
Njl Model ◽  
The Magnetic Field ◽  
Good Agreement

Within the framework of cold magnetized SU(2) Nambu-Jona-Lasinio model we evaluate the [Formula: see text] and [Formula: see text] pole mass, as well as, [Formula: see text], [Formula: see text] at zero baryon density. We employ a magnetic field dependent coupling, [Formula: see text], fitted to reproduce lattice QCD results for the quark condensates. In particular, we find that the [Formula: see text] meson mass systematically decreases when the magnetic field increases, in good agreement with recent lattice calculations.

scholarly journals Passage of heavy quarks through the fluctuating hot QCD medium

2021 ◽  
Vol 81 (7) ◽  
Author(s):  
Mohammad Yousuf Jamal ◽  
Bedangadas Mohanty
Keyword(s):  
Chemical Potential ◽  
Equations Of State ◽  
Collision Frequency ◽  
Heavy Quarks ◽  
Baryon Density ◽  
Momentum Dependence ◽  
Theory Approach ◽  
Gain Energy ◽  
Field Fluctuations ◽  
Experimental Facilities

AbstractThe change in the energy of the moving heavy (charm and bottom) quarks due to field fluctuations present in the hot QCD medium has been studied. A finite quark chemical potential has been considered while modeling the hot QCD medium counting the fact that the upcoming experimental facilities such as Facility for Anti-proton and Ion Research (FAIR) and Nuclotron-based Ion Collider fAcility (NICA) are expected to operate at finite baryon density and moderate temperature. The effective kinetic theory approach has been adopted where the collisions have been incorporated using the well-defined collisional kernel, known as Bhatnagar–Gross–Krook (BGK). To incorporate the non-ideal equations of state (EoSs) effects/medium interaction effects, an extended effective fugacity model has been adopted. The momentum dependence of the energy change due to fluctuation for the charm and bottom quark has been investigated at different values of collision frequency and chemical potential. The results are exciting as the heavy quarks are found to gain energy due to fluctuations while moving through the produced medium at finite chemical potential and collision frequency.

scholarly journals Thermal properties of hot and dense matter: Influence of rapid rotation on protoneutron stars, hot neutron stars, and neutron star merger remnants

2021 ◽  
Vol 252 ◽  
pp. 05004
Author(s):  
Polychronis Koliogiannis ◽  
Charalampos Moustakidis
Keyword(s):  
Neutron Star ◽  
Equation Of State ◽  
Neutron Stars ◽  
Nuclear Matter ◽  
Equations Of State ◽  
Interaction Model ◽  
Dense Matter ◽  
Baryon Density ◽  
Dense Nuclear Matter ◽  
Protoneutron Stars

The knowledge of the equation of state is a key ingredient for many dynamical phenomena that depend sensitively on the hot and dense nuclear matter, such as the formation of protoneutron stars and hot neutron stars. In order to accurately describe them, we construct equations of state at FInite temperature and entropy per baryon for matter with varying proton fractions. This procedure is based on the momentum dependent interaction model and state-of-the-art microscopic data. In addition, we investigate the role of thermal and rotation effects on microscopic and macroscopic properties of neutron stars, including the mass and radius, the frequency, the Kerr parameter, the central baryon density, etc. The latter is also connected to the hot and rapidly rotating remnant after neutron star merger. The interplay between these quantities and data from late observations of neutron stars, both isolated and in matter of merging, could provide useful insight and robust constraints on the equation of state of nuclear matter.

scholarly journals Heavy-ion collisions and lattice QCD at finite baryon density

2004 ◽  
Vol 30 (8) ◽  
pp. S1271-S1274 ◽  
Author(s):  
Krzysztof Redlich ◽  
Frithjof Karsch ◽  
Abdelnasser Tawfik
Keyword(s):  
Lattice Qcd ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Baryon Density ◽  
Ion Collisions

scholarly journals PHASE DIAGRAM OF THE STRONG INTERACTION SYSTEM FROM LATTICE QCD

2011 ◽  
Vol 01 ◽  
pp. 28-33
Author(s):  
SEYONG KIM
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Properties ◽  
Lattice Qcd ◽  
Strong Interaction ◽  
Accurate Determination ◽  
Baryon Density ◽  
Quark Masses ◽  
Interaction System ◽  
Sign Problem

We briefly review recent progresses in studying QCD thermodynamics from lattice QCD. Investigation of QCD in zero baryon density shows a rapid cross-over with realistic (u, d, s) quark masses. Various improvements of lattice QCD action leads to more accurate determination of QCD thermodynamic properties. Although simulating QCD in non-zero baryon density is difficult due to "sign problem", steady progress is also achieved.

scholarly journals Gluons in two-color QCD at high baryon density

2021 ◽  
pp. 2044032
Author(s):  
V. G. Bornyakov ◽  
R. N. Rogalyov
Keyword(s):  
Lattice Qcd ◽  
Gauge Group ◽  
Chemical Potential ◽  
Landau Gauge ◽  
Baryon Density ◽  
Relative Strength ◽  
Transverse Gluon

Landau gauge longitudinal and transverse gluon propagators are studied in lattice QCD with gauge group [Formula: see text] at varying temperature and quark density. In particular, it is found that the longitudinal propagator decreases with increasing quark chemical potential at all temperatures under study, whereas the transverse propagator increases with increasing quark chemical potential at [Formula: see text] MeV and does not depend on it at higher temperatures. The relative strength of chromoelectric and chromomagnetic interactions is also discussed.

scholarly journals Nuclear symmetry energy effects on neutron stars properties

2020 ◽  
Vol 15 ◽  
pp. 128
Author(s):  
Ch. C. Moustakidis ◽  
V. P. Psonis ◽  
S. E. Massen
Keyword(s):  
Neutron Star ◽  
Neutron Stars ◽  
Systematic Study ◽  
Symmetry Energy ◽  
Potential Model ◽  
Equations Of State ◽  
Baryon Density ◽  
Nuclear Symmetry Energy ◽  
Global Properties ◽  
Potential Part

We construct a class of nuclear equations of state based on a schematic potential model, that originates from the work of Prakash et. al. [1], which reproduce the results of most microscopic calculations. The equations of state are used as input for solving the Tolman- Oppenheimer-Volkov equations for corresponding neutron stars. The potential part contribution of the symmetry energy to the total energy is parameterized in a generalized form both for low and high values of the baryon density. The obtained nuclear equations of state are applied for the systematic study of the global properties of a neutron star (masses, radii and composition). We also address on the problem of the existence of correlation between the pressure near the saturation density and the radius.

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