SMASH - A hadronic transport approach

SMASH is a relativistic hadronic transport approach including all well-established hadrons up to a mass of ~ 2 GeV as degrees of freedom. Electromagnetic emission is treated perturbatively. It constitutes an effective solution of the relativistic Boltzmann equation with binary interactions. Most interactions proceed via resonance excitation and decay at lower energies or string excitation and fragmentation at higher energies. The following applications have been well tested:

• Dynamical description of heavy-ion collisions at low beam energies (0.4 to 2.0 AGeV kinetic energy)
• Infinite matter calculations to investigate equilibrium properties
• Afterburner for dilute non-equilibrium stages of high beam energy heavy-ion reactions
• Expansion of a spherically symmetric system

For calculations of the dynamical evolution of heavy-ion reactions at higher beam energies from center-of-mass energy of 7.7 GeV to 5.02 TeV per nucleon, SMASH provides reasonable results for hadron production of the main species. For all other purposes the SMASH-vHLLE hybrid approach is available.

For more details about SMASH, please refer to the webpage https://smash-transport.github.io