Electromagnetic field and the chiral magnetic effect in the quark-gluon plasma

Tuchin, Kirill

doi:10.1103/physrevc.91.064902

Cited by 96 publications

(95 citation statements)

References 52 publications

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“…[26,[93][94][95][96][97] in which the authors studied how the spectators induced magnetic field evolve in QGP phase (assuming the system is already in the QGP phase at the initial time). The main information from these studies are that the presence of the conducting matter can significantly delay the decay of the magnetic field.…”

Section: Recent Quenched Lattice Studies Using Wilson Fermions Obtainmentioning

confidence: 99%

Electromagnetic fields and anomalous transports in heavy-ion collisions—a pedagogical review

2016

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The hot and dense matter generated in heavy-ion collisions may contain domains which are not invariant under P and CP transformations. Moreover, heavy-ion collisions can generate extremely strong magnetic fields as well as electric fields. The interplay between the electromagnetic field and triangle anomaly leads to a number of macroscopic quantum phenomena in these P-and CP-odd domains known as the anomalous transports. The purpose of the article is to give a pedagogical review of various properties of the electromagnetic fields, the anomalous transports phenomena, and their experimental signatures in heavyion collisions. CONTENTS

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Section: Recent Quenched Lattice Studies Using Wilson Fermions Obtainmentioning

confidence: 99%

Electromagnetic fields and anomalous transports in heavy-ion collisions—a pedagogical review

2016

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“…Besides, several possible mechanisms (sources) to increase the photon radiation in heavy ion collisions look quite realistic theoretically but have not been sufficiently definite in phenomenological predictions. One of those mechanisms suggests, for example, that a very strong magnetic field created in noncentral heavy ion collisions can increase the photon radiation owing to the conformal anomaly [15] and synchrotron radiation [16,17]. Another mechanism contributing significantly to the observed anisotropy of direct photons refers to a "magnetic bremsstrahlung-like radiation" (synchrotron radiation in modern terminology) of quarks in the collective color field ensuring a confinement [18].…”

Section: Published By the American Physical Society Under The Terms Omentioning

confidence: 99%

Direct-photon spectrum and elliptic flow produced from Pb+Pb collisions at sNN=2.76 TeV at the CERN Large Hadron Collider within an integrated hydrokinetic model

2018

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The photon transverse momentum spectrum and its anisotropy from Pb+Pb collisions at the CERN Large Hadron Collider energy √ s NN = 2.76 TeV are investigated within the integrated hydrokinetic model (iHKM). Photon production is accumulated from the different processes at the various stages of relativistic heavy ion collisions: from the primary hard photons of very early stage of parton collisions to the thermal photons from equilibrated quark-gluon and hadron gas stages. Along the way a hadronic medium evolution is treated in two distinct, in a sense opposite, approaches: chemically equilibrated and chemically frozen system expansion. Studying the centrality dependence of the results obtained allows us to conclude that a relatively strong transverse momentum anisotropy of thermal radiation is suppressed by prompt photon emission which is an isotropic. We find out that this effect is getting stronger as centrality increases because of the simultaneous increase in the relative contribution of prompt photons in the soft part of the spectra. The substantial results obtained in iHKM with nonzero viscosity (η/s = 0.08) for photon spectra and v 2 coefficients are mostly within the error bars of experimental data, but there is some systematic underestimation of both observables for the near central events. We claim that a situation could be significantly improved if an additional photon radiation that accompanies the presence of a deconfined environment is included. Since a matter of a space-time layer where hadronization takes place is actively involved in anisotropic transverse flow, both positive contributions to the spectra and v 2 are considerable, albeit such an argument needs further research and elaboration.

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“…For instance, the conductivity has recently been discussed in the context of charge density fluctuations [4] and the evolution of strong electromagnetic fields produced in noncentral collisions [5][6][7][8][9][10]. It has also been suggested that experimental information on conductivity can be extracted from flow parameters in heavy-ion collisions [11].…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity and charge diffusion in thermal QCD from the lattice

Aarts

Allton

Amato

et al. 2015

J. High Energ. Phys.

218

281

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We present a lattice QCD calculation of the charge diffusion coefficient, the electrical conductivity and various susceptibilities of conserved charges, for a range of temperatures below and above the deconfinement crossover. The calculations include the contributions from up, down and strange quarks. We find that the diffusion coefficient is of the order of 1/(2πT ) and has a dip around the crossover temperature. Our results are obtained with lattice simulations containing 2+1 dynamical flavours on anisotropic lattices. The Maximum Entropy Method is used to construct spectral functions from correlators of the conserved vector current.

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Electromagnetic field and the chiral magnetic effect in the quark-gluon plasma

Cited by 96 publications

References 52 publications

Electromagnetic fields and anomalous transports in heavy-ion collisions—a pedagogical review

Electromagnetic fields and anomalous transports in heavy-ion collisions—a pedagogical review

Direct-photon spectrum and elliptic flow produced from Pb+Pb collisions at sNN=2.76 TeV at the CERN Large Hadron Collider within an integrated hydrokinetic model

Electrical conductivity and charge diffusion in thermal QCD from the lattice

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