smash-transport/smash: SMASH-2.0

The applicability of hydrodynamics in heavy ion collisions at $\sqrt{s_{\rm NN}}$= 2.4-7.7 GeV

“…The reliability of SMASH is supported by semi-analytical tests [53,54], by comparison with other codes [55,56] and with experimental data [57]. For this work we use SMASH version 2.0.2 [58] in the cascade mode and we compute the energy momentum tensor in the Landau frame [49] at the nodes of a regularly spaced cubic lattice aligned with the beam axis and the reaction plane, with a side length of 75 fm, center coincident with that of the colliding system, space resolution of 1 fm and time intervals of 0.5 fm. The energy momentum tensor T µν and the four currents j µ at the position r are evaluated as:…”

The role of proton-antiproton regeneration in the late stages of heavy-ion collisions

“…We employ the SMASH-vHLLE-Hybrid approach [16]. The initial conditions are provided by the SMASH hadronic transport approach [11,17], the evolution of the fireball is performed by the 3+1D viscous hydrodynamics code vHLLE [18], particlization is achieved with the SMASH-hadron-sampler [19,20], and SMASH is again applied for the hadronic afterburner evolution. Our objective is not to achieve a precise description of experimental data, but to employ values for parameters of the hybrid approach that are known to reproduce bulk properties at high beam energies well (compatible with [8]).…”

Cluster dynamics studied with the phase-space Minimum Spanning Tree approach

“…• The Simulating Many Accelerated Stronglyinteracting Hadrons (SMASH) [32,33] model is a hadronic transport approach which provides a dynamical description of heavy-ion reactions in the low and intermediate beam energy range. The relativistic Boltzmann equation with hadronic degrees of freedom is solved including an (optional) density dependent Skyrme type mean field potential.…”