Quark Matter 2025

Simulating stochastic diffusion in critical and near-critical fluids in (3+1) dimensions

8 Apr 2025, 11:10

20m

HZ 5 (Goethe University Frankfurt, Campus Westend, Hörsaalzentrum)

Oral QCD phase diagram & critical point Parallel session 20

Speaker

Thomas Schaefer

Description

We describe numerical simulations of stochastic fluid dynamics
with a conserved charge coupled to the momentum density of the
fluid. This theory is known as model H, and it is expected to
describe universal dynamics in the vicinity of a possible
critical endpoint in the QCD phase diagram. We verify dynamical
scaling, and compute the scaling exponent and the renormalized
viscosity. We also describe exploratory simulations that include
a relativistic background fluid.