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[Licence| Download | New Version Template] aegh_v5_0.tar.gz(15545 Kbytes)
Manuscript Title: CMBE v05 - Implementation of a toy-model for chaos analysis of relativistic nuclear collisions at the present BNL energies
Authors: I.V. Grossu, D. Felea, Al. Jipa, C. Besliu, E. Stan, O. Ristea, C. Ristea, M. Calin, T. Esanu, C. Bordeianu, N. Tuturas
Program title: Chaos Many-Body Engine v05
Catalogue identifier: AEGH_v5_0
Distribution format: tar.gz
Journal reference: Comput. Phys. Commun. 185(2014)3059
Programming language: Visual C# .Net 2010.
Computer: PC.
Operating system: .Net Framework 4.0 running on MS Windows.
RAM: 128 MB
Supplementary material: A Word copy of the complete New Version Announcement, including the figures, can be downloaded here.
Keywords: Many-body chaos theory, Relativistic nuclear collisions, High energy physics.
PACS: 24.60.Lz, 05.45.a.
Classification: 11.1, 17.8.

Does the new version supersede the previous version?: Yes

Nature of problem:
Toy-model for relativistic nuclear collisions at present BNL energies.

Solution method:
Relativistic many-body OOP engine, including a reactions module.

Reasons for new version:
  1. Implementation of the "Mean Free Time" parameter;
  2. Implementation of a new example of use for relativistic nuclear collisions at present BNL energies.

Summary of revisions:
  1. Implementation of a new parameter, namely the "Mean Free Time", defined as the mean time between one particle's creation and its stimulated decay. The Mean Free Time should be understood as an effect of the nuclear environment and, as opposed to the particle lifetime, it is measured in the observation system (not affected by the relativistic dilation). Following this purpose, a new tag (MeanFreeTime) was added in the "Particles" section of the specific XML reactions input file described in [2].
  2. Analysis\Chaos Analysis\Double\Other: Implementation of a, more reliable, fuzzy algorithm [3] for probability distributions.
  3. Math\Vector\GetRandomVector: Bug correction (the distribution is now isotropic)
  4. Simulations\Collider: New example of use for relativistic nuclear collisions at present BNL energies [4]

Additional comments:
Inspired by existing nuclear billiards [5,6], in [2] we implemented a toy-model for relativistic nuclear collisions at 4.5 A GeV/c (the SKM 200 collaboration [7,8]). In this work, we extended our model to higher energies. Following this purpose, we inherited the SimulationCollisionExample class (the SimulationColliderExample class), and employed an extended set of reactions (the ColliderReactions.xml file). The, previously discussed, Mean Free Time concept also plays an important role in this context. As an exemplification of CMBE capabilities, in Fig.1-3 (see Supplementary material, above) we present some preliminary results [9] for 1000 Au-Au events at 200 A GeV (the maximum BNL energy [4]), simulated at 0.1 Fm/c temporal resolution.

References:
[1] I.V. Grossu, C. Besliu, D. Felea, Al. Jipa, Comput. Phys. Comm. 185 (2014) 1339-1342.
[2] I.V. Grossu, C. Besliu, Al. Jipa, E. Stan, T. Esanu, D. Felea , C.C. Bordeianu, Comput.Phys. Comm. 183 (2012) 1055-1059.
[3] D. Dumitrescu, Fuzzy Measures and the entropy of fuzzy partitions, J. Math, Anal. Appl., 176 (1993b) 359-373.
[4] Al. Jipa, C. Besliu, Elemente de.zica Nucleara Relativista - Note de curs, Editura Universitatii din Bucuresti, Bucuresti, Romania, 2002.
[5] G.F. Burgio, F.M. Baldo, A. Rapisarda, P. Schuck, Phys. Rev. C 58 (1998) 2821-2830.
[6] D. Felea, C.C. Bordeianu, I.V. Grossu, C. Besliu, Al. Jipa, A.-A. Radu, E. Stan, EPL, 93 (2011) 42001.
[7] A.U. Abdurakhimov, et al. preprint JINR 13-10692, 1977.
[8] C. Besliu, N. Ghiordanescu, M. Pentia, Studii si Cercetari de Fizica 29 (1977).
[9] I.V. Grossu, D. Felea, Al. Jipa, C. Besliu, E. Stan, O. Ristea, C. Ristea, M. Calin, T. Esanu, C. Bordeianu, N. Tuturas, Applications of Chaos Many-Body Engine for the analysis of relativistic nuclear collisions at 200 A GeV/c, Quark Matter 2014, Conference, 19-24 May 2014.