Diffusion of conserved charges in relativistic heavy ion collisions

Abstract

In order to characterize nuclear matter under extreme conditions, we calculate all diffusion transport coefficients related to baryon, electric and strangeness charge for both a hadron resonance gas and a simplified kinetic model of the quark-gluon plasma. We demonstrate that the diffusion currents do not depend only on gradients of their corresponding charge density. Instead, we show that there exists coupling between the different charge currents, in such a way that it is possible for density gradients of a given charge to generate dissipative currents of another charge. Within this scheme, the charge diffusion coefficient is best viewed as a matrix, in which the diagonal terms correspond to the usual charge diffusion coefficients, while the off-diagonal terms describe the coupling between the different currents. In this letter, we calculate for the first time the complete diffusion matrix including the three charges listed above. We find that the baryon diffusion current is strongly affected by baryon charge gradients, but also by its coupling to gradients in strangeness. The electric charge diffusion current is found to be strongly affected by electric and strangeness gradients, whereas strangeness currents depend mostly on strange and baryon gradients.

6 pages, 2 figures

References in corpus (16)

• Big-Bang Nucleosynthesis
• Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
• 200 A GeV Au+Au collisions serve a nearly perfect quark-gluon liquid
• Parton transport and hadronization from the dynamical quasiparticle point of view
• Influence of the shear viscosity of the quark-gluon plasma on elliptic flow in ultrarelativistic heavy-ion collisions
• Electrical conductivity and charge diffusion in thermal QCD from the lattice
• Bulk viscosity of QCD matter near the critical temperature
• Transport Coefficients of Bulk Viscous Pressure in the 14-moment approximation
• Perturbative QCD Calculations of Elliptic Flow and Shear Viscosity in Au+Au Collisions at $\sqrt{s_{NN}}=200$ GeV
• Origin of the Relaxation Time in Dissipative Fluid Dynamics
• Shear Viscosity in a Gluon Gas
• Electric conductivity of the quark-gluon plasma investigated using a perturbative QCD based parton cascade
• Electric Conductivity from the solution of the Relativistic Boltzmann Equation
• Bulk viscous evolution within anisotropic hydrodynamics
• Relativistic Dissipative Hydrodynamic Equations at the Second Order for Multi-Component Systems with Multiple Conserved Currents
• Dissipative Hydrodynamic Effects on Baryon Stopping

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