Heavy quark collisional energy loss in the quark-gluon plasma including finite relaxation time

Elías, Mauro; Peralta-Ramos, J.; Calzetta, Esteban

doi:10.1103/physrevd.90.014038

Cited by 17 publications

(17 citation statements)

References 40 publications

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“…The E a ind (X) relates to the external current of the moving heavy quark whereas the randomly fluctuating E a f l , vanishes on the statistical averaging, i.e., E a f l = 0. Therefore, the main contribution to the energy loss comes from the polarization of chromo-electric field that can be expressed as in [12,16,42,43],…”

Section: Energy Loss Of a Moving Heavy Partonmentioning

confidence: 99%

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Energy loss of heavy quarks in the isotropic collisional hot QCD medium

Jamal¹,

Chandra²

2019

Preprint

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Collisional energy loss of heavy partons (charm and bottom quarks) has been determined within the framework of semi-classical transport theory implying Bhatnagar-Gross-Krook (BGK) collisional kernel. Hot QCD medium effects have been incorporated while employing a quasi-particle description of the medium in terms of effective gluons, quarks and antiquarks with respective temperature dependent effective fugacities. The momentum dependence of the energy loss for charm and bottom quark has been investigated. It is observed that with the increase in momentum of the heavy quarks, the loss increases sharply for the smaller values and reaches a saturation later. Further, as compared to the charm quark, bottom quark losses less energy at a particular momentum and collisional frequency. The energy loss is seen to increase with increasing collisional frequency. We also provide a comparative study of the results obtained using BGK-kernel than those using relaxation time approximation (RTA)-kernel and found them consistent with each other. The medium effects in all the situations are seen to play quite significant role.

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Section: Energy Loss Of a Moving Heavy Partonmentioning

confidence: 99%

“…The heavy quarks collisional energy loss inside the quark-gluon plasma medium within the framework of transport approach, employing the finite RTA has been studied in Ref. [42]. Same with the BGK collisional kernel has been investigated in Ref.…”

Section: Introductionmentioning

confidence: 99%

Energy loss of heavy quarks in the isotropic collisional hot QCD medium

Jamal¹,

Chandra²

2019

Preprint

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“…For the homogeneous equations it is a trivial result, and for the inhomogeneous equations it is directly apparent from the transformation law for F µν and the last of exprs. (40). Therefore transforming eqs.…”

Section: B Conformal Invariancementioning

confidence: 99%

Non-conformal evolution of magnetic fields during reheating

Calzetta

Kandus

2015

J. Cosmol. Astropart. Phys.

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We consider the evolution of electromagnetic fields coupled to conduction currents during the reheating era after inflation, and prior to the establishing of the proton-electron plasma. We assume that the currents may be described by second order causal hydrodynamics. The resulting theory is not conformally invariant. The expansion of the Universe produces temperature gradients which couple to the current and generally oppose Ohmic dissipation. Although the effect is not strong, it suggests that the unfolding of hydrodynamic instabilities in these models may follow a different pattern than in first order theories, and even than in second order theories on non expanding backgrounds. *

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“…The relativistic hydrodynamic simulations associated with a small shear viscosity rather successfully explain the flow data and transverse momentum spectra of ultimate hadron from heavy ion collisions, for reviews please refer to Refs [1][2][3][4][5]. Soon afterwards the viscous effects on the diverse aspects of the hot QGP, including photon and dilepton production [6,7], heavy quarkonium dissolution [8,9], energy loss suffered by the fast parton traveling through the QGP [10][11][12][13] and the induced wakes [14][15][16][17][18], the quark polarization [19] and the chiral magnetic/vortical effects [20][21][22], the dielectric properties of the QGP medium [23][24][25] and the dynamical evolution of QCD matter during the first-order phase transition from hadronic matter to quark matter [26], have been addressed in recent years.…”

Section: Introductionmentioning

confidence: 99%

Color-electric conductivity in a viscous quark-gluon plasma

Jiang,

Shi,

Hou

et al. 2020

Preprint

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Several different transport processes, such as heat transport, momentum transport and charge transport, may take place at the same time in the quark-gluon plasma (QGP). The corresponding transport coefficients are heat conductivity, shear viscosity and electric conductivity respectively. In the present paper, we will study the color-electric conductivity of the QGP in presence of shear viscosity, which is focused on the connection between the charge transport and the momentum transport. To achieve that goal, we solve the viscous chromohydrodynamic equations which are obtained from the QGP kinetic theory associated with the distribution function modified by shear viscosity. According to the solved color fluctuations of hydrodynamic quantities we obtain the induced color current through which the color-electric conductivity is derived. Then we study viscous effects on the color-electric conductivity. In the viscous chromohydrodynamic approach, the conductivity properties of the QGP are mainly demonstrated by the longitudinal part of the color-electric conductivity. Shear viscosity has an appreciable impact on real and imaginary parts of the color-electric conductivity in some frequency region.

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Heavy quark collisional energy loss in the quark-gluon plasma including finite relaxation time

Cited by 17 publications

References 40 publications

Energy loss of heavy quarks in the isotropic collisional hot QCD medium

Energy loss of heavy quarks in the isotropic collisional hot QCD medium

Non-conformal evolution of magnetic fields during reheating

Color-electric conductivity in a viscous quark-gluon plasma

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