scholarly journals Fluctuating heavy quark energy loss in a strongly coupled quark-gluon plasma

2015 ◽  
Vol 91 (8) ◽  
Author(s):  
W. A. Horowitz
Keyword(s):  
Energy Loss ◽  
Heavy Quark ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Strongly Coupled ◽  
Quark Energy Loss

scholarly journals Heavy quark radiation in the quark–gluon plasma in the Moliere theory: angular distribution of the radiation

2021 ◽  
Vol 81 (9) ◽  
Author(s):  
B. Blok
Keyword(s):  
Angular Distribution ◽  
Phase Space ◽  
Energy Loss ◽  
Heavy Quark ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Transverse Momentum Distribution ◽  
Coulomb Interactions ◽  
The Dead ◽  
Quark Energy Loss

AbstractWe study the effects of adding the Coulomb interactions to the harmonic oscillator (HO) approximation of the heavy parton propagating through the quark–gluon plasma (the extension to QCD of the Molliere theory). We explicitly find the expression for the transverse momentum distribution of the gluon radiation of the heavy quark propagating in the quark gluon plasma in the framework of the Moliere theory, taking into account the BDMPSZ radiation in the HO approximation, and the Coulomb logarithms described by the additional logarithmic terms in the effective potential. We show that these Coulomb logarithms significantly influence the HO distribution, derived in the BDMPSZ works, especially for the small transverse momenta, filling the dead cone, and reducing the dead cone suppression of the heavy quark radiation (dead cone effect). In addition we study the effect of the phase space constraints on the heavy quark energy loss, and argue that taking into account of both the phase space constraints and of the Coulomb gluons reduces the dependence of the heavy quark energy loss on its mass in the HO approximation.

scholarly journals Heavy quark energy loss in the quark-gluon plasma in the Moller theory

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
B. Blok
Keyword(s):  
Energy Loss ◽  
Harmonic Oscillator ◽  
Heavy Quark ◽  
Quark Gluon Plasma ◽  
Path Length ◽  
Cone Angle ◽  
Gluon Plasma ◽  
Frequency Region ◽  
Analytical Expression ◽  
Quark Energy Loss

Abstract We study the energy loss of a heavy quark propagating in the quark-gluon plasma (QGP) in the framework of the Moller theory, including possible large Coulomb logarithms as a perturbation to BDMPSZ bremsstrahlung, described in the harmonic oscillator (HO) approximation. We derive the analytical expression that describes the energy loss in the entire emitted gluon frequency region. In the small frequencies region, for angles larger than the dead cone angle, the energy loss is controlled by the BDMPSZ mechanism, while for larger frequencies it is described by N = 1 term in the GLV opacity expansion. We estimate corresponding quenching rates for different values of the heavy quark path length and different m/E ratios.

scholarly journals Heavy quark energy loss and angular de-correlation in a quark-gluon plasma matter

2013 ◽  
Vol 446 ◽  
pp. 012035 ◽  
Author(s):  
Shanshan Cao ◽  
Guang-You Qin ◽  
Steffen A Bass ◽  
Berndt Müller
Keyword(s):  
Energy Loss ◽  
Heavy Quark ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Quark Energy Loss

scholarly journals Heavy quark energy loss far from equilibrium in a strongly coupled collision

2013 ◽  
Vol 2013 (10) ◽  
Author(s):  
Paul M. Chesler ◽  
Mindaugas Lekaveckas ◽  
Krishna Rajagopal
Keyword(s):  
Energy Loss ◽  
Heavy Quark ◽  
Strongly Coupled ◽  
Far From Equilibrium ◽  
Quark Energy Loss

scholarly journals Drag force on heavy quarks and spatial string tension

2018 ◽  
Vol 33 (06) ◽  
pp. 1850041 ◽  
Author(s):  
Oleg Andreev
Keyword(s):  
String Duality ◽  
Drag Coefficient ◽  
Heavy Quark ◽  
Quark Gluon Plasma ◽  
Diffusion Coefficients ◽  
Transport Coefficients ◽  
Gluon Plasma ◽  
String Tension ◽  
Heavy Quarks ◽  
Strongly Coupled

Heavy quark transport coefficients in a strongly coupled Quark–Gluon Plasma can be evaluated using a gauge/string duality and lattice QCD. Via this duality, one can argue that for low momenta the drag coefficient for heavy quarks is proportional to the spatial string tension. Such a tension is well-studied on the lattice that allows one to straightforwardly make non-perturbative estimates of the heavy quark diffusion coefficients near the critical point. The obtained results are consistent with those in the literature.

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