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arXiv · 1608.01125

Tree Code for Collision Detection of Large Numbers of Particles Application for the Breit-Wheeler Process

Oliver Jansen·Emmanuel d'Humières·Xavier Ribeyre·Sophie Jequier·Vladimir Tikhonchuk
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Abstract

Collision detection of a large number N of particles can be challenging. Directly testing N particles for collision among each other leads to N 2 queries. Especially in scenarios, where fast, densely packed particles interact, challenges arise for classical methods like Particle-in-Cell or Monte-Carlo. Modern collision detection methods utilising bounding volume hierarchies are suitable to overcome these challenges and allow a detailed analysis of the interaction of large number of particles. This approach is applied to the analysis of the collision of two photon beams leading to the creation of electron-positron pairs.

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Oliver Jansen, Emmanuel d'Humières, Xavier Ribeyre, Sophie Jequier, Vladimir Tikhonchuk. 2016-08-03. Tree Code for Collision Detection of Large Numbers of Particles Application for the Breit-Wheeler Process. https://arxiv.org/abs/1608.01125

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