English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The specific shear viscosity (eta/s)_QGP of a Quark-Gluon-Plasma (QGP) attemperatures T_c < T < 2T_c is extracted from the centrality dependence of theeccentricity-scaled elliptic flow measured in ultra-relativistic heavy-ioncollisions. Coupling viscous fluid dynamics for the QGP with a microscopictransport model for hadronic freeze-out we find that the eccentricity-scaledelliptic flow is a universal function of charged multiplicity per unit overlaparea, (1/S)(dN_ch/dy), that depends only on the viscosity but not on the modelused for computing the initial fireball eccentricity. Comparing withmeasurements we find 1 < (4pi)(eta/s)_QGP < 2.5 where the uncertainty range isdominated by model uncertainties for the eccentricity values used to normalizethe measured elliptic flow.

200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid