Abstract:
We develop a framework to calculate transport properties in cold, dense relativistic quasiparticle system within the Fermi-liquid theory at the mean-field level. Building on our previous study [Phys. Rev. C 111, 044904 (2025)], we start from the linearized relativistic Boltzmann equation tailored to quasiparticles with medium-dependent dispersion relation and implement Landau matching conditions, proving that the bulk viscosity is manifestly nonnegative. A low-temperature expansion then yields leading-order (
) expressions for the shear (
) and bulk (
) viscosities, where the behavior 
in the degenerate regime is found to be robust against quasiparticle mass correction. We couple the kinetic framework to a Walecka-type mean-field equation of state and compute and for cold, dense nucleon matter. The transport properties of nucleonic matter in the degenerate regime can be relevant for intermediate beam-energy nuclear experiments.
J. Li, W. Ke, J. Hu, „Fermi-liquid view of viscosity in cold and dense nucleon matter“, 1. Dez.
2025, arXiv:2512.01544 (2025).
https://arxiv.org/abs/2512.01544
Related to Project C06