Polyakov-loop suppression of colored states in a quark-meson-diquark plasma

Blaschke, D.; Dubinin, A.; Buballa, Michael

doi:10.1103/physrevd.91.125040

Cited by 26 publications

(31 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The masses of all the mesons and the condensate amplitude in the plasma decrease with T at T < T c . Such a characteristic behavior is different from that in other approaches [2,3,12] where the σ-meson mass also decreases but the pion mass remains either finite or increases. The variation of m σ(vac) (and g 2 ) shown in Table I only slightly affects the critical temperature as well as the thermal evolution of the meson masses.…”

Section: A Mass Spectrumcontrasting

confidence: 80%

Light meson gas in the QCD vacuum and oscillating universe

Prokhorov

Pasechnik

2018

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

We have developed a phenomenological effective quantum-field theoretical model describing the "hadron gas" of the lightest pseudoscalar mesons, scalar σ-meson and σ-vacuum, i.e. the expectation value of the σ-field, at finite temperatures. The corresponding thermodynamic approach was formulated in terms of the generating functional derived from the effective Lagrangian providing the basic thermodynamic information about the "meson plasma + QCD condensate" system. This formalism enables us to study the QCD transition from the hadron phase with direct implications for cosmological evolution. Using the hypothesis about a positively-definite QCD vacuum contribution stochastically produced in early universe, we show that the universe could undergo a series of oscillations during the QCD epoch before resuming unbounded expansion.

show abstract

Section: A Mass Spectrumcontrasting

confidence: 80%

Light meson gas in the QCD vacuum and oscillating universe

Prokhorov

Pasechnik

2018

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

show abstract

“…Masses and widths can be extracted which encode information on the medium modification of mesons by the underlying quark-antiquark substructure. Therefore, the nl-PNJL, and quark (and gluon) models in general, are in an interesting position to properly account for the degrees of freedom in both, the hadron and the QGP phases, with the underlying physical mechanism for the vanishing of hadronic states from the spectrum in the QGP phase being their dissolution in the continuum of scattering states (the Mott effect) [55][56][57][58][59][60][61][62].…”

Section: Introductionmentioning

confidence: 99%

Medium induced Lorentz symmetry breaking effects in nonlocal Polyakov–Nambu–Jona-Lasinio models

et al. 2014

Self Cite

View full text Add to dashboard Cite

In this paper we detail the thermodynamics of two flavor nonlocal Polyakov-Nambu-Jona-Lasinio models for different parametrizations of the quark interaction regulators. The structure of the model is upgraded in order to allow for terms in the quark selfenergy which violate Lorentz invariance due to the presence of the medium. We examine the critical properties, the phase diagram as well as the equation of state. Furthermore, some aspects of the Mott effect for pions and sigma mesons are discussed explicitly within a nonlocal Polyakov-Nambu-Jona-Lasinio model. In particular, we continued the meson polarization function in the complex energy plane and under certain approximations, we were able to extract the imaginary part as a function of the meson energy. We were not able to calculate the dynamical meson mass, and therefore resorted to a technical study of the temperature dependence of the meson width by replacing the meson energy with the temperature dependent spatial meson mass. Our results show that while the temperature behavior of the meson widths is qualitatively the same for a wide class of covariant regulators, the special case where the nonlocal interactions are introduced via the instanton liquid model singles out with a drastically different behavior.

show abstract

“…We remark that in this simplified model, the back reaction on the electric-blind fields hasn't been taken into account. The coupling of the quark sector to the Polyakov loop is not enclosed and therefore it is not able to yield the (de)confinement effect [68,69]. Furthermore, a first principle calculation can be pursued by Dyson-Schwinger equations and/or functional renormalization group approaches.…”

Section: Discussionmentioning

confidence: 99%

Phase diagram of two-color QCD matter at finite baryon and axial isospin densities *

Chao

2020

Chinese Phys. C

View full text Add to dashboard Cite

We study the two-color QCD matter within two fundamental quark flavors via both chiral perturbation theory and Nambu-Jona-Lasinio model methods. The effective Lagrangian described by low lying meson and baryon, i.e., diquark, is derived, where the excitations locate in the extended SU(4) flavor symmetry space. We determine the leading order terms on the dependence of the baryon and axial isospin densities. Then, the two-color NJL model is employed to run the numerical simulation and the phase diagram in the plane of µ − ν5 is plotted.

show abstract

Polyakov-loop suppression of colored states in a quark-meson-diquark plasma

Cited by 26 publications

References 51 publications

Light meson gas in the QCD vacuum and oscillating universe

Light meson gas in the QCD vacuum and oscillating universe

Medium induced Lorentz symmetry breaking effects in nonlocal Polyakov–Nambu–Jona-Lasinio models

Phase diagram of two-color QCD matter at finite baryon and axial isospin densities *

Contact Info

Product

Resources

About