Theta vacuum effects on QCD phase diagram

Abstract

Theta vacuum effects on the QCD phase structure in the μ-T plane are studied by using the Polyakov-loop extended Nambu-Jona-Lasinio model and its extension, where μis the quark chemical potential and T is temperature, respectively. As the parameter θof the theta vacuum increases, the chiral transition becomes stronger. For large θ, it eventually becomes first order even at zero μ.

7 pages, 6 figures

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• Effects of a multi-quark interaction on color superconducting phase transition in an extended NJL model
• Violations of parity and charge conjugation in the theta vacuum with imaginary chemical potential
• Investigation of meson masses for real and imaginary chemical potential

Cited by in corpus (20)

• Polyakov loop modeling for hot QCD
• Hot Quark Matter with an Axial Chemical Potential
• Theta dependence of the deconfinement temperature in Yang-Mills theories
• Phase diagram of Yang-Mills theories in the presence of a theta term
• Confinement and Z_3 symmetry in three-flavor QCD
• Theta vacuum and entanglement interaction in the three-flavor Polyakov-loop extended Nambu-Jona-Lasinio model
• Effect of the chiral phase transition on axion mass and self-coupling
• CP violation and chiral symmetry breaking in hot and dense quark matter in presence of magnetic field
• Anomalous $U(1{)}_A$ couplings and the Columbia plot
• In medium properties of axion within a Polyakov loop enhanced Nambu-Jona-Lasinio model
• Quark Number Susceptibility : Revisited with Fluctuation-Dissipation Theorem in mean field theories
• Spontaneous parity and charge-conjugation violations at real isospin and imaginary baryon chemical potentials
• Effects of entanglement and instanton suppression at finite temperature in a SU(2) EPNJL model with anomaly
• Strong CP violation and chiral symmetry breaking in hot and dense quark matter
• Deconfinement vs. chiral symmetry and higher representation matter
• Interplay between chiral and axial symmetries in a SU(2) Nambu--Jona-Lasinio Model with the Polyakov loop
• A practical solution to the sign problem at finite theta-vacuum angle
• Practical approach to the sign problem at finite theta-vacuum angle
• Functional renormalization group study of a four-fermion model with $CP$ violation
• First-order CP phase transition in two-flavor QCD at $\theta =\pi$ under electromagnetic scale anomaly via a Nambu-Jona-Lasinio description