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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In ultrarelativistic heavy-ion collisions, a plasma of deconfined quarks andgluons is formed within $1$ fm/c of the nuclei's impact. The complex dynamicsof the collision before $\approx 1$ fm/c is often described with parametricmodels, which affect the predictivity of calculations. In this work, we performa systematic analysis of LHC measurements from Pb-Pb collisions, by combiningan \emph{ab-initio} model of the early stage of the collisions with ahydrodynamic model of the plasma. We obtain state-of-the-art constraints on theshear and bulk viscosity of quark-gluon plasma. We mitigate the additional costof the ab-initio initial conditions by combining Bayesian model averaging withtransfer learning, allowing us to account for important theoreticaluncertainties in the hydrodynamics-to-hadron transition. We show that, despitethe apparent strong constraints on the shear viscosity, metrics that balancethe model's predictivity with its degree of agreement with data do not prefer atemperature-dependent specific shear viscosity over a constant value. Wevalidate the model by comparing with discriminating observables not used in thecalibration, finding excellent agreement.

Early-times Yang-Mills dynamics and the characterization of strongly interacting matter with statistical learning