Electrical conductivity of the quark-gluon plasma and soft photon spectrum in heavy-ion collisions

Yin, Yi

doi:10.1103/PhysRevC.90.044903

Title: Electrical conductivity of the quark-gluon plasma and soft photon spectrum in heavy-ion collisions

Journal Article · Mon Oct 06 00:00:00 EDT 2014 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.90.044903· OSTI ID:1176993

Yin, Yi ^[1]

Univ. of Illinois, Chicago, IL (United States); Brookhaven National Lab., Upton, NY (United States)

We extract the electrical conductivity σ0 of the quark gluon plasma (QGP) and study the effects of magnetic field and chiral anomaly on soft photon azimuthal anisotropy, v₂, based on the thermal photon spectrum at 0.4GeV < p⊥< 0.6GeV at the RHIC energy. As a basis for my analysis, we derive the behavior of retarded photon self-energy of a strongly interacting neutral plasma in hydrodynamic regime in the presence of magnetic field and chiral anomaly. By evolving the resulting soft thermal photon production rate over the realistic hydrodynamic background and comparing the results with the data from the PHENIX Collaboration, I found that the electrical conductivity at QGP temperature is in the range: 0.4 < σ₀/(e²T) < 1.1, which is comparable with recent studies on lattice. I also compare the contribution from the magnetic field and chiral anomaly to soft thermal photon v₂ with the data. I argue that at the CERN Large Hadron Collider, the chiral magnetic wave would give negative contribution to photon v₂.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-01ER41195; AC02-98CH10886; FG0201ER41195

OSTI ID:: 1176993

Alternate ID(s):: OSTI ID: 1180107

Report Number(s):: BNL-107347-2015-JA; PRVCAN; KB0301020

Journal Information:: Physical Review C, Nuclear Physics, Vol. 90, Issue 4; ISSN 0556-2813

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 36 works

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Hadronic and partonic sources of direct photons in relativistic heavy-ion collisions Linnyk, O.; Konchakovski, V.; Steinert, T. arXiv https://doi.org/10.48550/arxiv.1504.05699	text	January 2015
Numerical magneto-hydrodynamics for relativistic nuclear collisions Inghirami, Gabriele; Del Zanna, Luca; Beraudo, Andrea arXiv https://doi.org/10.48550/arxiv.1609.03042	text	January 2016
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