scholarly journals Strong-Interaction Matter under Extreme Conditions from Chiral Quark Models with Nonlocal Separable Interactions

Symmetry ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 121
Author(s):  
Daniel Gómez Dumm ◽  
Juan Pablo Carlomagno ◽  
Norberto N. Scoccola
Keyword(s):  
Phase Transitions ◽  
Strong Interaction ◽  
Quark Matter ◽  
Current Status ◽  
Extreme Conditions ◽  
Stellar Objects ◽  
Chemical Potentials ◽  
Inhomogeneous Phase ◽  
Quark Models ◽  
Strong Interaction Matter

We review the current status of the research on effective nonlocal NJL-like chiral quark models with separable interactions, focusing on the application of this approach to the description of the properties of hadronic and quark matter under extreme conditions. The analysis includes the predictions for various hadron properties in vacuum, as well as the study of the features of deconfinement and chiral restoration phase transitions for systems at finite temperature and/or density. We also address other related subjects, such as the study of phase transitions for imaginary chemical potentials, the possible existence of inhomogeneous phase regions, the presence of color superconductivity, the effects produced by strong external magnetic fields and the application to the description of compact stellar objects.

scholarly journals Deconfinement and chiral phase transitions in quark matter with a strong electric field

2020 ◽  
Vol 101 (1) ◽  
Author(s):  
William R. Tavares ◽  
Ricardo L. S. Farias ◽  
Sidney S. Avancini
Keyword(s):  
Phase Transitions ◽  
Electric Field ◽  
Quark Matter ◽  
Strong Electric Field ◽  
Chiral Phase

scholarly journals Revisiting the hot matter in the center of gamma-ray bursts and supernovae

2013 ◽  
Vol 555 ◽  
pp. A129 ◽  
Author(s):  
Ang Li ◽  
Tong Liu
Keyword(s):  
Strong Interaction ◽  
Gamma Ray ◽  
Gamma Ray Bursts ◽  
Model Calculations ◽  
Hartree Fock ◽  
Equation Of States ◽  
Chemical Potentials ◽  
Hot Matter ◽  
Inner Region ◽  
Proto Neutron Star

Aims. Hot matter with nucleons can be produced in the inner region of the neutrino-dominated accretion flow in gamma-ray bursts or during the proto-neutron star birth in successful supernovae. The composition and equation of state of the matter depend on the dynamic β equilibrium under various neutrino opacities. The strong interaction between nucleons may also play an important role. We plan to extend the previous studies by incorporating these two aspects in our model. Methods. The modification of the β-equilibrium condition from neutrino optically thin to thick was modeled by an equilibrium factor χ ranging between the neutrino-freely-escaping case and the neutrino-trapped case. We employed the microscopic Brueckner-Hartree-Fock approach extended to the finite temperature regime to study the interacting nucleons. Results. We show the composition and chemical potentials of the hot nuclear matter for different densities and temperatures at each stage of β equilibrium. We also compare our realistic equation of states with those of the free-gas model. We find that it is important to properly describe the neutrino opacity and the strong interaction between nucleons, and they should be taken into account in model calculations.

scholarly journals Thermodynamics of hot strong-interaction matter from ultrarelativistic nuclear collisions

2020 ◽  
Vol 16 (6) ◽  
pp. 615-619 ◽  
Author(s):  
Fernando G. Gardim ◽  
Giuliano Giacalone ◽  
Matthew Luzum ◽  
Jean-Yves Ollitrault
Keyword(s):  
Strong Interaction ◽  
Nuclear Collisions ◽  
Strong Interaction Matter

Probing phase transitions under extreme conditions by ultrafast techniques: Advances at the Fermi@Elettra free-electron-laser facility

2011 ◽  
Vol 357 (14) ◽  
pp. 2641-2647 ◽  
Author(s):  
Andrea Di Cicco ◽  
Francesco D'Amico ◽  
Goran Zgrablic ◽  
Emiliano Principi ◽  
Roberto Gunnella ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Free Electron ◽  
Free Electron Laser ◽  
Extreme Conditions ◽  
Laser Facility

scholarly journals Thermodynamics of strong-interaction matter from lattice QCD

2015 ◽  
Vol 24 (10) ◽  
pp. 1530007 ◽  
Author(s):  
Heng-Tong Ding ◽  
Frithjof Karsch ◽  
Swagato Mukherjee
Keyword(s):  
Phase Diagram ◽  
High Temperature ◽  
Magnetic Fields ◽  
Lattice Qcd ◽  
Strong Interaction ◽  
Dense Matter ◽  
Heavy Ion ◽  
Qcd Phase Diagram ◽  
Bulk Thermodynamics ◽  
Strong Interaction Matter

We review results from lattice QCD calculations on the thermodynamics of strong-interaction matter with emphasis on input these calculations can provide to the exploration of the phase diagram and properties of hot and dense matter created in heavy ion experiments. This review is organized in sections as follows: (1) Introduction, (2) QCD thermodynamics on the lattice, (3) QCD phase diagram at high temperature, (4) Bulk thermodynamics, (5) Fluctuations of conserved charges, (6) Transport properties, (7) Open heavy flavors and heavy quarkonia, (8) QCD in external magnetic fields, (9) Summary.

scholarly journals Bayesian analysis of multimessenger M-R data with interpolated hybrid EoS

2021 ◽  
Vol 57 (11) ◽  
Author(s):  
A. Ayriyan ◽  
D. Blaschke ◽  
A. G. Grunfeld ◽  
D. Alvarez-Castillo ◽  
H. Grigorian ◽  
...  
Keyword(s):  
Neutron Star ◽  
Bayesian Analysis ◽  
Quark Matter ◽  
Equations Of State ◽  
Maximum Mass ◽  
Chemical Potentials ◽  
Parabolic Interpolation ◽  
Njl Model ◽  
Actual Outcome ◽  
Large Maximum

AbstractWe introduce a family of equations of state (EoS) for hybrid neutron star (NS) matter that is obtained by a two-zone parabolic interpolation between a soft hadronic EoS at low densities and a set of stiff quark matter EoS at high densities within a finite region of chemical potentials $$\mu _H< \mu < \mu _Q$$ μ H < μ < μ Q . Fixing the hadronic EoS as the APR one and choosing the color-superconducting, nonlocal NJL model with two free parameters for the quark phase, we perform Bayesian analyses with this two-parameter family of hybrid EoS. Using three different sets of observational constraints that include the mass of PSR J0740+6620, the tidal deformability for GW170817, and the mass-radius relation for PSR J0030+0451 from NICER as obligatory (set 1), while set 2 uses the possible upper limit on the maximum mass from GW170817 as an additional constraint and set 3 instead of the possibility that the lighter object in the asymmetric binary merger GW190814 is a neutron star. We confirm that in any case, the quark matter phase has to be color superconducting with the dimensionless diquark coupling approximately fulfilling the Fierz relation $$\eta _D=0.75$$ η D = 0.75 and the most probable solutions exhibiting a proportionality between $$\eta _D$$ η D and $$\eta _V$$ η V , the coupling of the repulsive vector interaction that is required for a sufficiently large maximum mass. We used the Bayesian analysis to investigate with the method of fictitious measurements the consequences of anticipating different radii for the massive $$2~M_\odot $$ 2 M ⊙ PSR J0740+6220 for the most likely equation of state. With the actual outcome of the NICER radius measurement on PSR J0740+6220 we could conclude that for the most likely hybrid star EoS would not support a maximum mass as large as $$2.5~M_\odot $$ 2.5 M ⊙ so that the event GW190814 was a binary black hole merger.

scholarly journals KINETICS OF CHIRAL PHASE TRANSITIONS IN QUARK MATTER

2011 ◽  
Author(s):  
AWANEESH SINGH ◽  
SANJAY PURI ◽  
HIRANMAYA MISHRA
Keyword(s):  
Phase Transitions ◽  
Quark Matter ◽  
Chiral Phase ◽  
Kinetics Of
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