Fluctuating fluid dynamics for the QGP in the LHC and BES era

TL;DR

This paper discusses the importance of incorporating fluid dynamical fluctuations into models of quark-gluon plasma, especially for small systems and near the QCD critical point, with implications for LHC and BES experiments.

Contribution

It introduces the effects of propagating fluid dynamical fluctuations on QGP modeling, emphasizing their role in understanding critical phenomena and small system dynamics.

Findings

Fluctuations in the energy-momentum tensor affect LHC QGP descriptions.

Diffusive net-baryon density fluctuations are linked to critical phenomena.

Enhanced modeling of fluctuations aids in interpreting BES experimental results.

Abstract

In an era of high-precision determinations of QGP properties a full incorporation of fluid dynamical fluctuations into our models has become crucial, in particular, when describing the dynamics of small systems or near the conjectured QCD critical point. In this talk we discuss some effects of the propagation of these fluctuations. For LHC physics we focus on fluctuations in the energy-momentum tensor, while the impact of fluctuations in the diffusive net-baryon density is studied to improve our knowledge on the formation of critical fluctuations being searched in current and future BES programs.