  We provide numerical evidence that the Richtmyer-Meshkov (RM) instability
contributes to the cooling of a relativistic fluid. Due to the presence of jet
particles traveling throughout the medium, shock waves are generated in the
form of Mach cones. The interaction of multiple shock waves can trigger the RM
instability, and we have found that this process leads to a down-cooling of the
relativistic fluid. To confirm the cooling effect of the instability, shock
tube Richtmyer-Meshkov instability simulations are performed. Additionally, in
order to provide an experimental observable of the RM instability resulting
from the Mach cone interaction, we measure the two particle correlation
function and highlight the effects of the interaction. The simulations have
been performed with an improved version of the relativistic lattice Boltzmann
model, including general equations of state and external forces.
