2017/08/31 by Michał Spaliński · 2 citations
Mathematics · Physics and Astronomy · #Attractor #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Exact solutions in general relativity #Flow (mathematics) #Geometry #High-Energy Particle Collisions Research #Mathematical analysis #Mathematical physics #Mathematics #Mechanics #Momentum (technical analysis) #Particle physics #Physics #Plasma #Quantum electrodynamics #Quantum mechanics #Quark #Quark–gluon plasma #Stress–energy tensor #Tensor (intrinsic definition) #Theoretical physics #Yang–Mills existence and mass gap #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1016/j.physletb.2017.11.059
6 pages, 4 figures. v2: many small improvements. v3: introduction rephrased to emphasise key points
openalex publication_date 2017/12/02 · arxiv created 2017/12/13 · arxiv updated 2017/12/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
There is mounting evidence suggesting that relativistic hydrodynamics becomes relevant for the physics of quark–gluon plasma as the result of nonhydrodynamic modes decaying to an attractor apparent even when the system is far from local equilibrium. Here we determine this attractor for Bjorken flow in N=4 supersymmetric Yang–Mills theory (SYM) using Borel summation of the gradient expansion of the expectation value of the energy momentum tensor. By comparing the result to numerical simulations of the flow based on the AdS/CFT correspondence we show that it provides an accurate and unambiguous approximation of the hydrodynamic attractor in this system. This development has important implications for the formulation of effective theories of hydrodynamics.