Chaos Many-Body Engine v03: A new version of code C# for chaos analysis of relativistic many-body systems with reactions

• Published in: Computer physics communications 2013-04, Vol.184 (4), p.1346-1347
• Main Authors: Grossu, I.V., Besliu, C., Jipa, Al, Felea, D., Esanu, T., Stan, E., Bordeianu, C.C.
• Format: Article
• Language: English
• Subjects: 3d relativistic many-body; C (programming language); Chaos theory; Computer simulation; Engines; Initial conditions; Lyapunov functions; Mathematical models; Particle interactions; Reverse simulation precision test; Summaries
• ISSN: 0010-4655; 1879-2944
• DOI: 10.1016/j.cpc.2012.12.012

In this paper we present a new version of the Chaos Many-Body Engine C# application (Grossu et al. 2012 [1]). In order to benefit from the latest technological advantages, we migrated the application from .Net Framework 2.0 to .Net Framework 4.0. New tools were implemented also. Trying to estimate the particle interactions dependence on initial conditions, we considered a new distance, which takes into account only the structural differences between two systems. We used this distance for implementing the “Structural Lyapunov” function. We propose also a new precision test based on temporal reversed simulations. Program title: Chaos Many-Body Engine v03 Catalogue identifier: AEGH_v3_0 Program summary URL: http://cpc.cs.qub.ac.uk/summaries/AEGH_v3_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 214429 No. of bytes in distributed program, including test data, etc.: 9512380 Distribution format: tar.gz Programming language: Visual C# .Net 2010 Computer: PC Operating system: .Net Framework 4.0 running on MS Windows RAM: 128 MB Classification: 24.60.Lz, 05.45.a Catalogue identifier of previous version: AEGH_v2_0 Journal reference of previous version: Computer Physics Communications 183 (2012) 1055–1059 Does the new version supersede the previous version?: Yes Nature of problem: Chaos analysis of three-dimensional, relativistic many-body systems with reactions. Solution method: Second order Runge–Kutta algorithm. Implementation of temporal reversed simulation precision test, and “Structural Lyapunov” function. Reasons for new version:1.In order to benefit from the advantages involved in the latest technologies (e.g. LINQ Queries [2]), Chaos Many-Body Engine was migrated from .Net Framework 2.0 to .Net Framework 4.0.2.In addition to existing energy conservation assessment [3], we propose also a reverse simulation precision test. Thus, for a regular simulation, we considered the corresponding reversed process: initial time equals the end time of regular simulation, and temporal resolution dt