Speaker
Description
We have studied how weak momentum anisotropy, generated by the asymptotic expansion of baryon asymmetric matter in the initial stages of ultrarelativistic heavy ion collisions, modifies the charge and the heat transport coefficients and their associated observables. The electrical and the thermal conductivities are computed by solving the relativistic Boltzmann transport equation in the relaxation time approximation within the kinetic theory framework. Partonic interactions are incorporated through the quasiparticle distribution functions at finite temperature, anisotropy and baryon asymmetry. Additionally, we analyze the local equilibrium property of the medium through the Knudsen number and examine the interplay between the heat flow and the charge flow through the Lorenz number in the Wiedemann-Franz law for an anisotropic hot QCD medium at finite baryon asymmetry. Our results show that the expansion-induced anisotropy suppresses both electrical and thermal conductivities in baryonless as well as in baryon asymmetric matter. Conversely, in both isotropic and anisotropic scenarios, the electrical and the thermal conductivities remain higher in baryon asymmetric matter than in baryonless matter. The above results are broadly attributed to the anisotropy-driven deformation of partonic distribution functions and modified partonic dispersion relations, leading to measurable consequences for equilibrium characteristics and the relative behavior of the heat and charge flow in the anisotropic hot QCD medium at finite baryon asymmetry.
| Track | QCD Physics |
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