2018/10/31 by Silvia Chiacchiera, S. Chiacchiera, D. Davesne +2 · 3 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Boltzmann constant #Boltzmann equation #Cold Atom Physics and Bose-Einstein Condensates #Collision #Collision frequency #Fermi Gamma-ray Space Telescope #Fermion #Mechanics #Phase (matter) #Physics #Plasma #Quantum mechanics #Quantum, superfluid, helium dynamics #Shock (circulatory) #Shock wave #Thermal #Thermal conductivity #Thermodynamics #Viscosity #cond-mat.quant-gas #nucl-th
paper · pdf · doi:10.1103/physreva.98.053622
published in Physical Review A 98(5) (American Physical Society) · 8 pages, 5 figures; v2: discussion and references added
openalex publication_date 2018/11/21 · arxiv created 2018/11/22 · arxiv updated 2018/11/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the formation and the dynamics of a shock wave originating from the collision between two ultracold clouds of strongly interacting fermions as observed at a lower temperature in an experiment by Joseph et al. [Phys. Rev. Lett. 106, 150401 (2011)]. We use the Boltzmann equation within the test-particle method to describe the evolution of the system in the normal phase. We also show a direct comparison with the hydrodynamic approach and insist on the necessity of including a shear-viscosity and a thermal-conductivity term in the equations to prevent unphysical behavior from taking place.