Conductivity, diffusivity, and violation of the Wiedemann-Franz Law in a hadron resonance gas with van der Waals interactions

In this work, a hadron resonance gas under van der Waals interactions has been studied. Both attractive and repulsive interactions between the meson-meson and (anti)baryon-(anti)baryon have been taken into considera-tion. Various transport properties such as electrical conductivity (crel) and thermal conductivity (Kth) have been estimated by solving the Boltzmann transport equation under the relaxation time approximation. The effect of baryochemical potential (mu B) and temperature is also explicitly explored for the mentioned observables. Comparisons have been made with the results obtained from other existing theoretical models. We observe the violation of Wiedemann-Franz law in a hadron resonance gas at a high-temperature regime. The corresponding diffusivities have also been estimated, which can help us to understand the systems better.

Automated summary

In this study, a hadron resonance gas with van der Waals interactions is investigated. Transport properties such as electrical and thermal conductivities are estimated by solving the Boltzmann transport equation, considering both attractive and repulsive interactions. The effects of baryochemical potential and temperature on these observables are explored, and comparisons are made with other theoretical models. Violation of the Wiedemann-Franz law is observed in the high-temperature regime of the hadron resonance gas, and diffusivities provide further insights into the system.