scholarly journals Applying constrained simulations for low temperature lattice QCD at finite baryon chemical potential

2018 ◽  
Vol 98 (7) ◽  
Author(s):  
G. Endrődi ◽  
Z. Fodor ◽  
S. D. Katz ◽  
D. Sexty ◽  
K. K. Szabó ◽  
...  
Keyword(s):  
Low Temperature ◽  
Lattice Qcd ◽  
Chemical Potential ◽  
Baryon Chemical Potential ◽  
Temperature Lattice

scholarly journals Lattice QCD at finite baryon density using analytic continuation

2018 ◽  
Vol 182 ◽  
pp. 02017 ◽  
Author(s):  
V.G. Bornyakov ◽  
D.L. Boyda ◽  
V.A. Goy ◽  
H. Iida ◽  
A.V. Molochkov ◽  
...  
Keyword(s):  
Analytic Continuation ◽  
Lattice Qcd ◽  
Chemical Potential ◽  
Baryon Number ◽  
Baryon Density ◽  
Analytical Continuation ◽  
Number Density ◽  
Baryon Chemical Potential ◽  
The Real ◽  
Wilson Fermions

We simulate lattice QCD with two flavors of Wilson fermions at imaginary baryon chemical potential. Results for the baryon number density computed in the confining and deconfining phases at imaginary baryon chemical potential are used to determine the baryon number density and higher cumulants at the real chemical potential via analytical continuation.

scholarly journals Polyakov loop eigenvalues in the presence of baryon chemical potential

2020 ◽  
Vol 28 (2) ◽  
pp. 39-50
Author(s):  
O. Borisenko ◽  
V. Chelnokov ◽  
S. Voloshyn
Keyword(s):  
Phase Diagram ◽  
Free Energy ◽  
Gauge Theory ◽  
Lattice Qcd ◽  
Effective Action ◽  
Chemical Potential ◽  
Baryon Density ◽  
Polyakov Loop ◽  
Baryon Chemical Potential ◽  
Pure Gauge Theory

The eigenvalues of the Polyakov loop are calculated in the strong coupled lattice QCD at finite tempera­ture. This is done both in the pure gauge theory and in the theory with heavy quarks at finite baryon chemical potential. Computations are performed in the mean­field like approach to the effective action. Using the eigenvalues obtained we also evaluate the free energy, real and imaginary parts of the Polyakov loops and the baryon density. The phase diagram of the model and influence of the baryon chemical potential are discussed in details. We underline a similarity between our calculations and continuum derivations of the phenomenon of A0 condensation.

scholarly journals The critical point of Bootstrap and Lattice QCD

2020 ◽  
Vol 15 ◽  
pp. 233
Author(s):  
N. G. Antoniou ◽  
F. K. Diakonos ◽  
A. S. Kapoyannis
Keyword(s):  
Lattice Qcd ◽  
Critical Point ◽  
High Temperatures ◽  
Chemical Potential ◽  
Hadronic Matter ◽  
Baryon Chemical Potential ◽  
Statistical Bootstrap

It is shown that the hadronic matter formed at high temperatures, according to the prescription of the statistical bootstrap principle, develops a critical point at nonzero baryon chemical potential. The location of the critical point is evaluated with the use of lattice QCD pressure.

scholarly journals Exploring the Partonic Phase at Finite Chemical Potential in and out-of Equilibrium

Particles ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 178-192 ◽  
Author(s):  
O. Soloveva ◽  
P. Moreau ◽  
L. Oliva ◽  
V. Voronyuk ◽  
V. Kireyeu ◽  
...  
Keyword(s):  
Cross Sections ◽  
Chemical Potential ◽  
Transport Coefficients ◽  
Gluon Plasma ◽  
Entropy Density ◽  
Baryon Chemical Potential ◽  
Equilibrium Study ◽  
200 Gev ◽  
Quasiparticle Model ◽  
Scattering Cross Sections

We study the influence of the baryon chemical potential μ B on the properties of the Quark–Gluon–Plasma (QGP) in and out-of equilibrium. The description of the QGP in equilibrium is based on the effective propagators and couplings from the Dynamical QuasiParticle Model (DQPM) that is matched to reproduce the equation-of-state of the partonic system above the deconfinement temperature T c from lattice Quantum Chromodynamics (QCD). We study the transport coefficients such as the ratio of shear viscosity η and bulk viscosity ζ over entropy density s, i.e., η / s and ζ / s in the ( T , μ ) plane and compare to other model results available at μ B = 0 . The out-of equilibrium study of the QGP is performed within the Parton–Hadron–String Dynamics (PHSD) transport approach extended in the partonic sector by explicitly calculating the total and differential partonic scattering cross sections based on the DQPM and the evaluated at actual temperature T and baryon chemical potential μ B in each individual space-time cell where partonic scattering takes place. The traces of their μ B dependences are investigated in different observables for symmetric Au + Au and asymmetric Cu + Au collisions such as rapidity and m T -distributions and directed and elliptic flow coefficients v 1 , v 2 in the energy range 7.7 GeV ≤ s N N ≤ 200 GeV.

scholarly journals Charmonium spectral functions with the variational method in zero and finite temperature lattice QCD

2011 ◽  
Vol 84 (9) ◽  
Author(s):  
H. Ohno ◽  
S. Aoki ◽  
S. Ejiri ◽  
K. Kanaya ◽  
Y. Maezawa ◽  
...  
Keyword(s):  
Variational Method ◽  
Lattice Qcd ◽  
Finite Temperature ◽  
Spectral Functions ◽  
Temperature Lattice

Low temperature lattice conductivity of some two-dimensional magnetic crystals

1976 ◽  
Vol 20 (7) ◽  
pp. 713-715 ◽  
Author(s):  
L.H.M. Coenen ◽  
H.N. De Lang ◽  
J.H.M. Stoelinga ◽  
H. van Kempen ◽  
P. Wyder
Keyword(s):  
Low Temperature ◽  
Two Dimensional ◽  
Temperature Lattice

scholarly journals Using the Linear Sigma Model with quarks to describe the QCD phase diagram and to locate the critical end point

2018 ◽  
Vol 172 ◽  
pp. 08002
Author(s):  
Alejandro Ayala ◽  
Jorge David Castaño-Yepes ◽  
José Antonio Flores ◽  
Saúl Hernández ◽  
Luis Hernández
Keyword(s):  
Phase Diagram ◽  
Critical Temperature ◽  
Sigma Model ◽  
Chemical Potential ◽  
Linear Sigma Model ◽  
Transition Line ◽  
Baryon Chemical Potential ◽  
First Order ◽  
Qcd Phase Diagram ◽  
Crossover Transition

We study the QCD phase diagram using the linear sigma model coupled to quarks. We compute the effective potential at finite temperature and quark chemical potential up to ring diagrams contribution. We show that, provided the values for the pseudo-critical temperature Tc = 155 MeV and critical baryon chemical potential μBc ≃ 1 GeV, together with the vacuum sigma and pion masses. The model couplings can be fixed and that these in turn help to locate the region where the crossover transition line becomes first order.

scholarly journals Hadron Resonance Gas EoS and the Fluidity of Matter Produced in HIC

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Guruprasad Kadam ◽  
Swapnali Pawar
Keyword(s):  
Mass Spectrum ◽  
Chemical Potential ◽  
Heavy Ion ◽  
Baryon Chemical Potential ◽  
Hadron Mass ◽  
Lattice Quantum ◽  
Hadron Gas ◽  
Ion Collision ◽  
Discrete Mass ◽  
The Ideal

We study the equation of state (EoS) of hot and dense hadron gas by incorporating the excluded volume corrections into the ideal hadron resonance gas (HRG) model. The total hadron mass spectrum of the model is the sum of the discrete mass spectrum consisting of all the experimentally known hadrons and the exponentially rising continuous Hagedorn states. We confront the EoS of the model with lattice quantum chromodynamics (LQCD) results at finite baryon chemical potential. We find that this modified HRG model reproduces the LQCD results up to T=160 MeV at zero as well as finite baryon chemical potential. We further estimate the shear viscosity within the ambit of this model in the context of heavy-ion collision experiments.

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