Shear viscosity and electric conductivity of a hot and dense QGP with a chiral phase transition

Soloveva, Olga; Fuseau, David; Aichelin, Jörg; Bratkovskaya, Elena

doi:10.48550/arxiv.2011.03505

Cited by 2 publications

(5 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One can see a difference in the vicinity of the phase transition in the T-dependence for the transport models, which can be attributed to differences in the evaluation of the viscosities as well as difference between the transport model descriptions. Additionally, we show the RTA calculations from the N f = 2 linear sigma model (for a vacuum sigma mass m 0 = 600 MeV) [40] and the N f = 3 PNJL model [41].…”

Section: Transport Coefficients Of the Qcd At Finite Chemical Potentialmentioning

confidence: 99%

“…The dark red dashed-dotted line corresponds to the RTA estimations for the N f = 2 linear sigma model [40]. The dark green dashed line presents RTA estimations for the N f = 3 PNJL model [41]. For the hadronic phase T < T c = 0.158 GeV we show evaluations from transport models: URQMD (orange line with open circles) [42], SMASH (grey solid line with rhombuses) [43,44].…”

Section: Transport Coefficients Of the Qcd At Finite Chemical Potentialmentioning

confidence: 99%

“…The dark red dashed-dotted line corresponds to the RTA estimations for N f = 2 linear sigma model [40]. The dark green dashed line presents RTA estimations for N f = 3 PNJL model [41].…”

Section: Transport Coefficients Of the Qcd At Finite Chemical Potentialmentioning

confidence: 99%

See 2 more Smart Citations

QCD at finite chemical potential in and out-of equilibrium

2021

View full text Add to dashboard Cite

We review the transport properties of the strongly interacting quark-gluon plasma (QGP) created in heavy-ion collisions at ultrarelativistic energies, i.e. out-of equilibrium, and compare them to the equilibrium properties. The description of the strongly interacting (non-perturbative) 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 QCD. We study the transport coefficients such as the ratio of shear viscosity and bulk viscosity over entropy density, diffusion coefficients, electric conductivity etc versus temperature T and baryon chemical potential μ B . Based on a microscopic transport description of heavy-ion collisions we, furthermore, discuss which observables are sensitive to the QGP formation and its properties.

show abstract

Section: Transport Coefficients Of the Qcd At Finite Chemical Potentialmentioning

confidence: 99%

Section: Transport Coefficients Of the Qcd At Finite Chemical Potentialmentioning

confidence: 99%

See 1 more Smart Citation

QCD at finite chemical potential in and out-of equilibrium

2021

View full text Add to dashboard Cite

show abstract

“…(the detailed comparsion of two methods can be found in Ref. [90]) (2) in Ref. [105], the spatial gradient of chemical potential also is included apart from the temperature gradient, accordingly the sign of S is mainly determined by a factor (E − ω/n q ) in the associated formalism with ω denoting the enthalpy density.…”

Section: Diagrammentioning

confidence: 99%

“…hadron gas model [85][86][87], quasiparticle models [88,89], the effective models [64,90], the string percolation model [91,92], the holographic method [93,94] and so on. Recently, the studies of the electrical conductivity in the QGP at magnetic fields have also been investigated [95][96][97][98][99].…”

Section: Introductionmentioning

confidence: 99%

Phenomenological study of the anisotropic quark matter in the 2-flavor Nambu-Jona-Lasinio model

Zhang¹,

Xiao²,

Kang³

et al. 2021

Preprint

View full text Add to dashboard Cite

The chiral phase structure, mesonic properties and transport properties in a momentum anisotropic quark matter induced by the preferential expansion of medium are phenomenologically investigated based on the two flavor Nambu-Jona-Lasinio model. The calculations of various transport coefficients have been performed using the kinetic theory in the relaxation time approximation, where the momentum anisotropy is embeded in the estimation of both distribution function and the relaxation time. Our results indicate that an increase in anisotropy parameter ξ can considerably lead to a catalysis of chiral symmetry breaking. The critical endpoint (CEP) is shifted to smaller temperatures and larger quark chemical potentials as ξ increases, and the influence of momentum anisotropy on temperature of CEP is almost the same as that on the quark chemical potential of CEP. The meson masses and the associated decay widths also significantly are affect by the variation of ξ. The temperature behavior of scaled shear viscosity η/T 3 and scaled electrical conductivity σ el /T exhibit a similar dip struture, however, their qualitative behaviors with ξ are different. Nevertheless, the minima of both η/T 3 and σ el /T shift toward higher temperatures with an increase of ξ. Furthermore, in this work the Seebeck coefficient S exhibits a decreasing function of temperature and its sign is positive, indicating the dominant carriers of converting the temperature gradient to the electric field are up quarks. With a rise in ξ the value of S has a significant enhancement for the temperature below the critical temperature.

show abstract

Shear viscosity and electric conductivity of a hot and dense QGP with a chiral phase transition

Cited by 2 publications

References 58 publications

QCD at finite chemical potential in and out-of equilibrium

QCD at finite chemical potential in and out-of equilibrium

Phenomenological study of the anisotropic quark matter in the 2-flavor Nambu-Jona-Lasinio model

Contact Info

Product

Resources

About