The UrQMD Model

Ultrarelativistic Quantum Molecular Dynamics

Overview

The Ultrarelativistic Quantum Molecular Dynamics model is a microscopic model used to simulate (ultra)relativistic heavy ion collisons in the energy range from Bevalac and SIS up to AGS, SPS and RHIC. Main goals are to gain understanding about the following physical phenomena within a single transport model:

  • Creation of dense hadronic matter at high temperatures
  • Properties of nuclear matter, Delta & Resonance matter
  • Creation of mesonic matter and of anti-matter
  • Creation and transport of rare particles in hadronic matter.
  • Creation, modification and destruction of strangeness in matter
  • Emission of electromagnetic probes

UrQMD has also been used as a component of various hybrid transport approaches, e.g.

  • Hydro+UrQMD
  • PCM+UrQMD
  • UrQMD+deexcitation models for nuclear waste calculations
  • GEANT4
  • CORSIKA+UrQMD for air-shower simulations
  • SENECA+UrQMD for air-shower simulations
Heavy Ion Collision (CERN)
© UrQMD, Marcus Bleicher

Documentation and Support

Download and restricted use

A link to the UrQMD download page can be found further down. Only sources are provided. Please note that software download is restricted: A password is required to be able to download the source code. Please contact urqmd_at_urqmd.org for further information.

Publications

General reference to the model:

  • S. A. Bass, M. Belkacem, M. Bleicher, M. Brandstetter, L. Bravina, C. Ernst, L. Gerland, M. Hofmann, S. Hofmann, J. Konopka, G. Mao, L. Neise, S. Soff, C. Spieles, H. Weber, L. A. Winckelmann, H. Stocker, W. Greiner, Ch. Hartnack, J. Aichelin and N. Amelin: Microscopic Models for Ultrarelativistic Heavy Ion Collisions Prog. Part. Nucl. Phys. 41 (1998) 225-370
  • M. Bleicher, E. Zabrodin, C. Spieles, S.A. Bass, C. Ernst, S. Soff, L. Bravina, M. Belkacem, H. Weber, H. Stocker, W. Greiner: Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model J. Phys. G: Nucl. Part. Phys. 25 (1999) 1859-1896 or from LANL e-print

Hybrid model including a hydrodynamic evolution for the hot and dense stage:

  • H. Petersen, J. Steinheimer, G. Burau, M. Bleicher and H. Stöcker: Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage Phys. Rev. C 78 (2008) 044901 or from arXiv e-print

License and Copyright Agreement

UrQMD source and documentation are provided freely for the purpose of checking and reproducing published results of the authors.

The Open Standard Codes and Routines (OSCAR)-Group has established - for good reasons - guidelines for reproducablity, usage and quality control of simlulations codes for pA and AA collsions.

UrQMD is a complex model. In order to ensure that it is used correctly that all results are reproducible and that the proper credits are given we ask for your agreement to the following copyright and safeguard mechanisms in the OSCAR spirit.

The UrQMD collaboration favors cooperation and joint projects with outside researchers. We encourage experimental collaborations to compare their results to UrQMD. We support you and/or cooperate on any sensible project related to UrQMD.

If you are interested in a project, please contact us.

Projects without the participation of the UrQMD-Collaboration are accepted, if the project is not a current thesis topic of any UrQMD-Collaboration member.

We expect that the code authors are informed about any changes and modifications made to the code. Any changes to the official version must be documented.

The code or any fragments of it shall not be given away to third parties. Similarily, events generated with UrQMD shall not be given to third parties without consent of the code authors.

As a general reference to the model please cite the following publications:

  • S. A. Bass, M. Belkacem, M. Bleicher, M. Brandstetter, L. Bravina, C. Ernst, L. Gerland, M. Hofmann, S. Hofmann, J. Konopka, G. Mao, L. Neise, S. Soff, C. Spieles, H. Weber, L. A. Winckelmann, H. Stocker, W. Greiner, Ch. Hartnack, J. Aichelin and N. Amelin: Microscopic Models for Ultrarelativistic Heavy Ion Collisions Prog. Part. Nucl. Phys. 41 (1998) 225-370
  • M. Bleicher, E. Zabrodin, C. Spieles, S.A. Bass, C. Ernst, S. Soff, L. Bravina, M. Belkacem, H. Weber, H. Stocker, W. Greiner: Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model J. Phys. G: Nucl. Part. Phys. 25 (1999) 1859-1896 or from LANL e-print

Members of the UrQMD Collaboration

  • Claudia Wieners
  • Max Lutterbeck
  • Timo Spielmann
  • Dr. Bjørn Bäuchle
  • Dr. Gerhard Burau
  • Dr. Jochen Gerhard
  • Dr. Elvira Santini
  • Dr. Thomas Lang
  • Dr. Michael Mitrovski
  • Dr. Sascha Vogel
  • Dr. Mohamed Belkacem
  • Dr. Sven Soff
  • Dr. Henning Weber
  • Dr. Nicolai Amelin
  • Dr. Christoph Hartnack
  • Dr. Xianglei Zhu
  • Dr. Stephane Haussler
  • Dr. Qingfeng Li
  • Prof. Dr. Jörg Aichelin
  • Prof. Dr. Horst Stöcker
  • Prof. Dr. Dr. h.c. mult. Walter Greiner