Viscous leptons in the quark gluon plasma

Berndt Müller, Di Lun Yang

研究成果: Article査読

8 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号125010
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
91
12
DOI
出版ステータスPublished - 2015 6月 9
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 物理学および天文学(その他)

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