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Understanding transport simulations of heavy-ion collisions at 100A and 400A MeV: Comparison of heavy-ion transport codes under controlled conditions
Xu, J; Chen, LW; Tsang, MB; Wolter, H; Zhang, YX; Aichelin, J; Colonna, M; Cozma, D; Danielewicz, P; Feng, ZQ; Le Fevre, A; Gaitanos, T; Hartnack, C; Kim, K; Kim, Y; Ko, CM; Li, BA; Li, QF; Li, ZX; Napolitani, P; Ono, A; Papa, M; Song, T; Su, J; Tian, JL; Wang, N; Wang, YJ; Weil, J; Xie, WJ; Zhang, FS; Zhang, GQ; Xu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.; Chen, LW (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China.; Chen, LW (reprint author), Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China.; Tsang, MB (reprint author), Michigan State Univ, Natl Supercond Cyclotron Lab, E Lansing, MI 48824 USA.; Tsang, MB (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.; Wolter, H (reprint author), Univ Munich, Fak Phys, D-85748 Garching, Germany.; Zhang, YX (reprint author), China Inst Atom Energy, Beijing 102413, Peoples R China.
2016
Source PublicationPHYSICAL REVIEW C
ISSN2469-9985
Volume93Issue:4Pages:
Subtype期刊文献
AbstractTransport simulations are very valuable for extracting physics information from heavy-ion-collision experiments. With the emergence of many different transport codes in recent years, it becomes important to estimate their robustness in extracting physics information from experiments. We report on the results of a transport-code-comparison project. Eighteen commonly used transport codes were included in this comparison: nine Boltzmann-Uehling-Uhlenbeck-type codes and nine quantum-molecular-dynamics-type codes. These codes have been asked to simulate Au + Au collisions using the same physics input for mean fields and for in-medium nucleon-nucleon cross sections, as well as the same impact parameter, the similar initialization setup, and other calculational parameters at 100 A and 400 A MeV incident energy. Among the codes we compare one-body observables such as rapidity and transverse flow distributions. We also monitor nonobservables such as the initialization of the internal states of colliding nuclei and their stability, the collision rates, and the Pauli blocking. We find that not completely identical initializations may have contributed partly to different evolutions. Different strategies to determine the collision probabilities and to enforce the Pauli blocking also produce considerably different results. There is a substantial spread in the predictions for the observables, which is much smaller at the higher incident energy. We quantify the uncertainties in the collective flow resulting from the simulation alone as about 30% at 100 A MeV and 13% at 400 A MeV, respectively. We propose further steps within the code comparison project to test the different aspects of transport simulations in a box calculation of infinite nuclear matter. This should, in particular, improve the robustness of transport model predictions at lower incident energies, where abundant amounts of data are available.
KeywordBoltzmann-langevin Approach Quantum Molecular-dynamics Uehling-uhlenbeck Approach Mean Field-dynamics Equation-of-state One-body Dynamics Nuclear-equation Symmetry Energy Intermediate Energies Microscopic Models
DOI10.1103/PhysRevC.93.044609
Indexed BySCI
Language英语
WOS IDWOS:000374297900004
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Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/25884
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorXu, J (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.; Chen, LW (reprint author), Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China.; Chen, LW (reprint author), Shanghai Jiao Tong Univ, Shanghai Key Lab Particle Phys & Cosmol, Shanghai 200240, Peoples R China.; Tsang, MB (reprint author), Michigan State Univ, Natl Supercond Cyclotron Lab, E Lansing, MI 48824 USA.; Tsang, MB (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA.; Wolter, H (reprint author), Univ Munich, Fak Phys, D-85748 Garching, Germany.; Zhang, YX (reprint author), China Inst Atom Energy, Beijing 102413, Peoples R China.
Recommended Citation
GB/T 7714
Xu, J,Chen, LW,Tsang, MB,et al. Understanding transport simulations of heavy-ion collisions at 100A and 400A MeV: Comparison of heavy-ion transport codes under controlled conditions[J]. PHYSICAL REVIEW C,2016,93(4):—.
APA Xu, J.,Chen, LW.,Tsang, MB.,Wolter, H.,Zhang, YX.,...&Zhang, YX .(2016).Understanding transport simulations of heavy-ion collisions at 100A and 400A MeV: Comparison of heavy-ion transport codes under controlled conditions.PHYSICAL REVIEW C,93(4),—.
MLA Xu, J,et al."Understanding transport simulations of heavy-ion collisions at 100A and 400A MeV: Comparison of heavy-ion transport codes under controlled conditions".PHYSICAL REVIEW C 93.4(2016):—.
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