Off-equilibrium corrections to energy and conserved charge densities in the relativistic fluid in heavy-ion collisions

Abstract

Dissipative processes in relativistic fluids are known to be important in the analyses of the hot QCD matter created in high-energy heavy-ion collisions. In this work, I consider dissipative corrections to energy and conserved charge densities, which are conventionally assumed to be vanishing but could be finite. Causal dissipative hydrodynamics is formulated in the presence of those dissipative currents. The relation between hydrodynamic stability and transport coefficients is discussed. I then study their phenomenological consequences on the observables of heavy-ion collisions in numerical simulations. It is shown that particle spectra and elliptic flow can be visibly modified.

10 pages, 5 figures; title changed, references added, conclusions unchanged

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Cited by in corpus (8)

• Causality and existence of solutions of relativistic viscous fluid dynamics with gravity
• Nonlinear causality of general first-order relativistic viscous hydrodynamics
• Baryon transport and the QCD critical point
• Prompt, pre-equilibrium, and thermal photons in relativistic nuclear collisions
• Relativistic hydrodynamics with momentum dependent relaxation time
• Landau and Eckart frames for relativistic fluids in nuclear collisions
• Correspondence between momentum dependent relaxation time and field redefinition of relativistic hydrodynamic theory
• Hydrodynamic description of the baryon-charged quark-gluon plasma