scholarly journals Jet quenching parameter of the quark-gluon plasma in a strong magnetic field: Perturbative QCD and AdS/CFT correspondence

2016 ◽  
Vol 94 (8) ◽  
Author(s):  
Shiyong Li ◽  
Kiminad A. Mamo ◽  
Ho-Ung Yee
Keyword(s):  
Magnetic Field ◽  
Strong Magnetic Field ◽  
Perturbative Qcd ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Jet Quenching

QUASIPARTICLE MODEL OF THE QUARK/GLUON PLASMA IN A STRONG MAGNETIC FIELD

2001 ◽  
Vol 16 (14) ◽  
pp. 2473-2491
Author(s):  
MARINA GIBILISCO
Keyword(s):  
Magnetic Field ◽  
Equation Of State ◽  
Magnetic Fields ◽  
Neutron Stars ◽  
Strong Magnetic Field ◽  
Quark Gluon Plasma ◽  
Quark Matter ◽  
Gluon Plasma ◽  
Important Influence ◽  
Quasiparticle Model

In this paper, I study the effect of a strong magnetic field on the quark/gluon plasma, whose properties are investigated by using a quasiparticle model with effective thermal masses for both the quarks and the gluons. This analysis is performed looking at the perspectives opened by the study of the interior of neutron stars, where large magnetic fields, as high as 1018 G, might exist; the high densities present in their core might also favor the matter deconfinement. I show that the presence of a large magnetic field has an important influence on the equation of state of the deconfined plasma; the astrophysical relevance of this effect is also discussed, together with the present possibilities to detect a quark matter star.

scholarly journals Medium induced QCD cascades: broadening and rescattering during branching

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
E. Blanco ◽  
K. Kutak ◽  
W. Płaczek ◽  
M. Rohrmoser ◽  
R. Straka
Keyword(s):  
Momentum Transfer ◽  
Quark Gluon Plasma ◽  
Evolution Equations ◽  
Gaussian Approximation ◽  
Gluon Plasma ◽  
Jet Quenching ◽  
Diffusive Approximation

Abstract We study evolution equations describing jet propagation through quark-gluon plasma (QGP). In particular we investigate the contribution of momentum transfer during branching and find that such a contribution is sizeable. Furthermore, we study various approximations, such as the Gaussian approximation and the diffusive approximation to the jet-broadening term. We notice that in order to reproduce the BDIM equation (without the momentum transfer in the branching) the diffusive approximation requires a very large value of the jet-quenching parameter $$ \hat{q} $$ q ̂ .

scholarly journals Lattice study of the electromagnetic conductivity of the quark-gluon plasma in an external magnetic field

2020 ◽  
Vol 102 (5) ◽  
Author(s):  
Nikita Astrakhantsev ◽  
V. V. Braguta ◽  
Massimo D’Elia ◽  
A. Yu. Kotov ◽  
A. A. Nikolaev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Quark Gluon Plasma ◽  
Gluon Plasma

scholarly journals JET QUENCHING PARAMETER VIA SOFT COLLINEAR EFFECTIVE THEORY (SCET)

2011 ◽  
Vol 20 (07) ◽  
pp. 1610-1615 ◽  
Author(s):  
FRANCESCO D'ERAMO ◽  
HONG LIU ◽  
KRISHNA RAJAGOPAL
Keyword(s):  
Transverse Momentum ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Jet Quenching ◽  
Effective Theory ◽  
Strongly Coupled ◽  
Expectation Value ◽  
Soft Collinear Effective Theory ◽  
Strongly Coupled Plasma ◽  
The Fourier Transform

We analyze the transverse momentum broadening in the absence of radiation of an energetic parton propagating through quark-gluon plasma via Soft Collinear Effective Theory (SCET). We show that the probability for picking up transverse momentum k⊥ is given by the Fourier transform of the expectation value of two transversely separated light-like path-ordered Wilson lines. The subtleties about the ordering of operators do not change the [Formula: see text] value for the strongly coupled plasma of [Formula: see text] SYM theory.

scholarly journals Perturbative QCD at High Temperature

1997 ◽  
Vol 12 (08) ◽  
pp. 1431-1464 ◽  
Author(s):  
Agustin Nieto
Keyword(s):  
Field Theory ◽  
Free Energy ◽  
Perturbation Theory ◽  
High Temperature ◽  
Perturbative Qcd ◽  
Effective Field Theory ◽  
Quark Gluon Plasma ◽  
Gluon Plasma ◽  
Effective Field ◽  
Recent Developments

Recent developments of perturbation theory at finite temperature based on effective field theory methods are reviewed. These methods allow the contributions from the different scales to be separated and the perturbative series to be reorganized. The construction of the effective field theory is shown in detail for ϕ4 theory and QCD. It is applied to the evaluation of the free energy of QCD at order g5 and the calculation of the g6 term is outlined. Implications for the application of perturbative QCD to the quark–gluon plasma are also discussed.

scholarly journals Jet quenching from heavy to light ion collisions

2021 ◽  
Vol 2021 (9) ◽  
Author(s):  
B. G. Zakharov
Keyword(s):  
Quark Gluon Plasma ◽  
Reasonable Agreement ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Jet Quenching ◽  
Light Nuclei ◽  
Nuclear Modification Factor ◽  
Nuclear Modification ◽  
Ion Collisions ◽  
Modification Factor

Abstract We perform an analysis of jet quenching in heavy and light ion collisions for scenarios without and with quark-gluon plasma formation in pp collisions. We find that the results for these scenarios are very similar, and both of them are in reasonable agreement with data for heavy ion collisions. However, their results become differ significantly for light nuclei. Using the parameters fitted to heavy ion data on the nuclear modification factor RAA, we make predictions for 0.2 and 7 TeV O+O collisions that can be verified by future experiments at RHIC and the LHC.

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