Thermal relaxation, electrical conductivity, and charge diffusion in a hot QCD medium

Mitra, Sukanya; Chandra, Vinod

doi:10.1103/physrevd.94.034025

Cited by 49 publications

(39 citation statements)

References 107 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[57]. This quasi-particle description of the hot QCD medium has shown to be highly useful in understanding the transport properties of the hot QCD medium [23,56,63,64], dilepton production in the QGP medium [55], and electrical conductivity and charge diffusion in the hot QCD medium [65].…”

Section: Near (Non)-equilibrium Quark and Gluon Distributionsmentioning

confidence: 99%

Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark–gluon-plasma medium

Chandra¹,

Sreekanth²

2017

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

Momentum anisotropy present during the hydrodynamic evolution of the Quark-Gluon Plasma (QGP) in RHIC may lead to the chromo-Weibel instability and turbulent chromo-fields.The dynamics of the quark and gluon momentum distributions in this case is governed by an effective diffusive Vlasov equation (linearized). The solution of this linearized transport equation for the modified momentum distribution functions lead to the mathematical form of non-equilibrium momentum distribution functions of quarks/antiquarks and gluons. The modifications to these distributions encode the physics of turbulent color fields and momentum anisotropy. In the present manuscript, we employ these distribution functions to estimate the thermal dilepton production rate in the QGP medium. The production rate is seen to have appreciable sensitivity to the strength of the anisotropy.

show abstract

Section: Near (Non)-equilibrium Quark and Gluon Distributionsmentioning

confidence: 99%

Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark–gluon-plasma medium

Chandra¹,

Sreekanth²

2017

Eur. Phys. J. C

Self Cite

View full text Add to dashboard Cite

show abstract

“…[47], the ratio of electrical conductivity to shear viscosity has been explored within the framework of the same quasiparticle approach as well. In a very recent work, Mitra and Chandra [30] estimated the electrical conductivity and charge diffusion coefficients employing EQPM. The EQPM has also served as basis to incorporate hot QCD medium effects while investigating heavyquark transport in isotropic [34] and anisotropic [33] along with quarkonia in hot QCD medium [31,32] and thermal particle production [35,36].…”

Section: A Isotropic Hot Qcd Mediummentioning

confidence: 99%

Collective excitations of hot QCD medium in a quasiparticle description

2017

Self Cite

View full text Add to dashboard Cite

Collective excitations of a hot QCD medium are the main focus of the present article. The analysis is performed within semi-classical transport theory with isotropic and anisotropic momentum distribution functions for the gluonic and quark-antiquark degrees of freedom that constitutes the hot QCD plasma. The isotropic/equilibrium momentum distributions for gluons and quarks are based on a recent quasi-particle description of hot QCD equations of state. The anisotropic distributions are just the extensions of isotropic ones by stretching or squeezing them in one of the directions. The hot QCD medium effects in the model adopted here enter through the effective gluon and quark fugacities along with non-trivial dispersion relations leading to an effective QCD coupling constant. Interestingly, with these distribution functions the tensorial structure of the gluon polarization tensor in the medium turned out to be similar to the one for the non-interacting ultra-relativistic system of quarks/antiquarks and gluons . The interactions mainly modify the Debye mass parameter and , in turn, the effective coupling in the medium. These modifications have been seen to modify the collective modes of the hot QCD plasma in a significant way.

show abstract

“…It is of fundamental importance for the strength of chiral magnetic effect [44], a signature of CP-violation of the strong interaction. Recently, electric conductivity has been studied by different groups [30,31,[45][46][47][48][49][50][51][54][55][56][57][58][59]. It is related to the soft dilepton production rate [60] and the magnetic field diffusion in the medium [61,62].…”

Section: Introductionmentioning

confidence: 99%

Shear viscosity η to electrical conductivity σel ratio for an anisotropic QGP

et al. 2017

View full text Add to dashboard Cite

We study the transport properties of strongly interacting matter in the context of ultrarelativistic heavy ion collision experiments. We calculate the transport coefficients viz. shear viscosity (η) and electrical conductivity (σ el ) of the quark gluon plasma phase in the presence of momentum anisotropy arising from different expansion rates of the medium in longitudinal and transverse direction. We solve the relativistic Boltzmann kinetic equation in relaxation time approximation to calculate the shear viscosity and electrical conductivity. The calculation are performed within the quasiparticle model to estimate these transport coefficients and discuss the connection between them. We also compare the electrical conductivity results calculated from the quasiparticle model with the ideal case. We compare our results with the corresponding results obtained in different lattice as well as model calculations.

show abstract

Thermal relaxation, electrical conductivity, and charge diffusion in a hot QCD medium

Cited by 49 publications

References 107 publications

Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark–gluon-plasma medium

Impact of momentum anisotropy and turbulent chromo-fields on thermal particle production in quark–gluon-plasma medium

Collective excitations of hot QCD medium in a quasiparticle description

Shear viscosity η to electrical conductivity σel ratio for an anisotropic QGP

Contact Info

Product

Resources

About