scholarly journals Phase Diagram and Critical Properties within an Effective Model of QCD: The Nambu–Jona-Lasinio Model Coupled to the Polyakov Loop

Symmetry ◽  
2010 ◽  
Vol 2 (3) ◽  
pp. 1338-1374 ◽  
Author(s):  
Pedro Costa ◽  
Maria C. Ruivo ◽  
Célia A. De Sousa ◽  
Hubert Hansen
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Effective Model ◽  
Critical Properties

Roberge–Weiss phase transition and QCD phase diagram in the (2 + 1) flavor Polyakov quark meson model

2019 ◽  
Vol 34 (02) ◽  
pp. 1950011
Author(s):  
Xiu-Fei Li
Keyword(s):  
Phase Transition ◽  
Phase Diagram ◽  
Chemical Potential ◽  
Polyakov Loop ◽  
Effective Model ◽  
Thermodynamic Quantities ◽  
Qcd Phase Diagram ◽  
Chemical Potentials

The Roberge–Weiss (RW) phase transition of (2 + 1) flavor QCD at imaginary quark chemical potentials [Formula: see text] is investigated by employing the Polyakov loop extended Quark Meson model (PQM), where [Formula: see text] is temperature, and [Formula: see text] is a dimensionless chemical potential. We calculate some thermodynamic quantities and draw the phase diagram. This work can be considered as a supplement of studying the RW transition by using the effective model.

scholarly journals EFFECT OF FIELD DIRECTION AND FIELD INTENSITY ON DIRECTED SPIRAL PERCOLATION

2006 ◽  
Vol 17 (09) ◽  
pp. 1285-1302 ◽  
Author(s):  
SANTANU SINHA ◽  
S. B. SANTRA
Keyword(s):  
Phase Diagram ◽  
Critical Behavior ◽  
Disordered Systems ◽  
Universality Class ◽  
Two Dimensions ◽  
Percolation Model ◽  
Field Direction ◽  
Critical Properties ◽  
External Bias ◽  
Directional Field

Directed spiral percolation (DSP) is a new percolation model with crossed external bias fields. Since percolation is a model of disorder, the effect of external bias fields on the properties of disordered systems can be studied numerically using DSP. In DSP, the bias fields are an in-plane directional field (E) and a field of rotational nature (B) applied perpendicular to the plane of the lattice. The critical properties of DSP clusters are studied here varying the direction of E field and intensities of both E and B fields in two-dimensions. The system shows interesting and unusual critical behavior at the percolation threshold. Not only the DSP model is found to belong in a new universality class compared to that of other percolation models but also the universality class remains invariant under the variation of E field direction. Varying the intensities of the E and B fields, a crossover from DSP to other percolation models has been studied. A phase diagram of the percolation models is obtained as a function of intensities of the bias fields E and B.

scholarly journals Spectrum of QCD at Finite Isospin Density

2018 ◽  
Vol 175 ◽  
pp. 07042 ◽  
Author(s):  
Philipp Scior ◽  
Lorenz von Smekal ◽  
Dominik Smith
Keyword(s):  
Phase Diagram ◽  
Low Temperature ◽  
Temperature Region ◽  
Chemical Potential ◽  
Phase Diagram Of Qcd ◽  
Baryon Density ◽  
Polyakov Loop ◽  
High Chemical ◽  
Pion Condensation

We study the phase diagram of QCD at finite isospin density using two flavors of staggered quarks. We investigate the low temperature region of the phase diagram where we find a pion condensation phase at high chemical potential. We started a basic analysis of the spectrum at finite isospin density. In particular, we measured pion, rho and nucleon masses inside and outside of the pion condensation phase. In agreement with previous studies in two-color QCD at finite baryon density we find that the Polyakov loop does not depend on the density in the staggered formulation.

scholarly journals Polyakov loop models in the large N limit: Phase diagram at finite density

2022 ◽  
Vol 105 (1) ◽  
Author(s):  
O. Borisenko ◽  
V. Chelnokov ◽  
S. Voloshyn
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Finite Density ◽  
Large N

QCD phase diagram in the Polyakov loop SU(2) Nambu—Jona-Lasinio model

2016 ◽  
Vol 186 (4) ◽  
pp. 387-403 ◽  
Author(s):  
Yurii L. Kalinovsky ◽  
V.D. Toneev ◽  
Aleksandra V. Friesen
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Qcd Phase Diagram

scholarly journals Pion condensation and phase diagram in the Polyakov-loop quark-meson model

2018 ◽  
Vol 98 (7) ◽  
Author(s):  
Prabal Adhikari ◽  
Jens O. Andersen ◽  
Patrick Kneschke
Keyword(s):  
Phase Diagram ◽  
Polyakov Loop ◽  
Pion Condensation

scholarly journals Two-bath spin-boson model: Phase diagram and critical properties

2014 ◽  
Vol 90 (24) ◽  
Author(s):  
Benedikt Bruognolo ◽  
Andreas Weichselbaum ◽  
Cheng Guo ◽  
Jan von Delft ◽  
Imke Schneider ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Critical Properties ◽  
Boson Model ◽  
Model Phase
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