Shear viscosity from lattice QCD

Szabolcs Borsányi, Zoltán Fodor, Simon Mages, Andreas Schäfer, Kálmán K. Szabó

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Understanding of the transport properties of the the quark-gluon plasma is becoming increasingly important to describe current measurements at heavy ion collisions. This work reports on recent efforts to determine the shear viscosity η in the deconfined phase from lattice QCD. The main focus is on the integration of the Wilson flow in the analysis to get a better handle on the infrared behaviour of the spectral function which is relevant for transport. It is carried out at finite Wilson flow time, which eliminates the dependence on the lattice spacing. Eventually, a new continuum limit has to be carried out which sends the new regulator introduced by finite flow time to zero. Also the non-perturbative renormalization strategy applied for the energy momentum tensor is discussed. At the end some quenched results for temperatures up to 4.5Tc are presented.

Original languageEnglish
Article number232
JournalProceedings of Science
VolumePart F130500
Publication statusPublished - Jan 1 2014
Event32nd International Symposium on Lattice Field Theory, LATTICE 2014 - New York, United States
Duration: Jun 23 2014Jun 28 2014

ASJC Scopus subject areas

  • General

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  • Cite this

    Borsányi, S., Fodor, Z., Mages, S., Schäfer, A., & Szabó, K. K. (2014). Shear viscosity from lattice QCD. Proceedings of Science, Part F130500, [232].