Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 5: Heavy-Ion Collisions and QCD Phases II

HK 5.3: Talk

Monday, March 30, 2020, 17:15–17:30, J-HS G

Longitudinal dynamics of multiple conserved charges — •Jan Fotakis¹, Harri Niemi², Gabriel Denicol³ und Carsten Greiner¹ — ¹Institut für Theoretische Physik, Goethe Universität, Frankfurt/Main — ²Department of Physics, University of Jyväskylä — ³Instituto de Física, Universidade Federal Fluminense

The constituents of nuclear matter produced at collider facilities carry a multitude of conserved charges, namely the baryon number, strangeness and electric charge, so that the diffusion currents of conserved charge couple with each other. Therefore, baryon density gradients in the high-density collision experiments at RHIC, FAIR or NICA will generate equalizing currents in all conserved charges. We provide for the first time a fluid dynamical approach including the complete diffusion coefficient matrix describing the evolution of a dense system with multiple conserved charges. A novel phenomenon arising from the coupled diffusion currents is the generation of positive and negative net-strangeness domains from originally net-strangeness neutral matter. We show how these domains are generated dynamically, and argue that observing the rapidity dependence of net-strangeness can give an experimental access to diffusion.