Mainz 2022 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 3: Heavy-Ion Collisions and QCD Phases II

HK 3.5: Talk

Monday, March 28, 2022, 15:15–15:30, HK-H2

Diffusion coefficients for hot hadron gases in the quark flavor representation — •Jakob Lohr, Jan Fotakis, and Carsten Greiner — University of Frankfurt

Heavy ion collisions play a big role in exploring the properties of hot and dense nuclear matter. In these the baryon number B, the electric charge Q, and the strangeness S of the produced matter are conserved. Their transport could especially be relevant in the description of the evolution of highly compressed baryonic matter, where strong gradients in baryon number are expected.

In general, the diffusion currents generated by gradients in the charge densities are coupled to each other, the coupling of which is characterized by the so-called diffusion coefficient matrix. In most works concerning diffusion coefficients or conductivites, the constituents of matter are usually characterized through the above mentioned conserved charges (BQS). However, in the case of strongly-interacting matter the particles can as well be characterized by their quark content and the corresponding conserved quark flavors.

In this talk, we will give a systematic discussion of the diffusion coefficient matrix of various hadronic systems in the so-called quark flavor representation using linear response theory in relativistic kinetic theory.