The iEBE-VISHNU code package for relativistic heavy-ion collisions

TL;DR

The iEBE-VISHNU code package enables detailed event-by-event simulations of relativistic heavy-ion collisions using a hybrid hydrodynamics and hadronic cascade approach, facilitating comprehensive model-data comparisons and rare probe calculations.

Contribution

This work introduces a versatile, detailed simulation package for relativistic heavy-ion collisions, integrating hydrodynamics, hadronic cascade, and rare probe interfaces.

Findings

Validated numerical implementation through tests.

Supports large-scale Monte Carlo simulations.

Provides interfaces for rare probe calculations.

Abstract

The iEBE-VISHNU code package performs event-by-event simulations for relativistic heavy-ion collisions using a hybrid approach based on (2+1)-dimensional viscous hydrodynamics coupled to a hadronic cascade model. We present the detailed model implementation, accompanied by some numerical code tests for the package. iEBE-VISHNU forms the core of a general theoretical framework for model-data comparisons through large scale Monte-Carlo simulations. A numerical interface between the hydrodynamically evolving medium and thermal photon radiation is also discussed. This interface is more generally designed for calculations of all kinds of rare probes that are coupled to the temperature and flow velocity evolution of the bulk medium, such as jet energy loss and heavy quark diffusion.