TY - JOUR
T1 - Viscous leptons in the quark gluon plasma
AU - Müller, Berndt
AU - Yang, Di Lun
N1 - Publisher Copyright:
© 2015 American Physical Society.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/6/9
Y1 - 2015/6/9
N2 - We investigate the shear viscosity of leptons in a strongly coupled quark gluon plasma. We find that the shear viscosity due to the lepton-quark scattering is inversely proportional to the ratio of electric conductivity of the quark gluon plasma to temperature up to the leading logarithmic order of the electromagnetic coupling. The finding implies that the thermal leptons form a more viscous fluid than the quarks by a large ratio. Using the known result for the electrical conductivity of strongly coupled plasmas obtained from gauge/gravity duality, we find that the lepton shear viscosity is suppressed compared with the one from lepton-lepton scattering. Consistently, we find an enhancement of the energy loss of hard leptons in a strongly coupled scenario compared with that in a weakly coupled plasma.
AB - We investigate the shear viscosity of leptons in a strongly coupled quark gluon plasma. We find that the shear viscosity due to the lepton-quark scattering is inversely proportional to the ratio of electric conductivity of the quark gluon plasma to temperature up to the leading logarithmic order of the electromagnetic coupling. The finding implies that the thermal leptons form a more viscous fluid than the quarks by a large ratio. Using the known result for the electrical conductivity of strongly coupled plasmas obtained from gauge/gravity duality, we find that the lepton shear viscosity is suppressed compared with the one from lepton-lepton scattering. Consistently, we find an enhancement of the energy loss of hard leptons in a strongly coupled scenario compared with that in a weakly coupled plasma.
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U2 - 10.1103/PhysRevD.91.125010
DO - 10.1103/PhysRevD.91.125010
M3 - Article
AN - SCOPUS:84931262169
VL - 91
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
SN - 1550-7998
IS - 12
M1 - 125010
ER -