BRANECODE: A program for simulations of braneworld dynamics

Abstract We describe an algorithm and a C++ implementation that we have written and made available for calculating the fully nonlinear evolution of 5D braneworld models with scalar fields. Bulk fields allow for the stabilization of the extra dimension. However, they complicate the dynamics of the system, so that analytic calculations (performed within an effective 4D theory) are usually only reliable for static bulk configurations or when the evolution of the extra dimension is negligible. In the gene... Title of program: BRANECODE Catalogue Id: ADVX_v1_0 Nature of problem Dynamics of two co-dimension one branes in a five-dimensional spacetime with a bulk scalar field and arbitrary potentials. The dynamics is governed by the five-dimensional Einstein equations of gravity and the junction conditions at the position of the branes. Versions of this program held in the CPC repository in Mendeley Data ADVX_v1_0; BRANECODE; 10.1016/j.cpc.2005.04.009 This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2018)摘要： 本文介绍了我们编写并公开的一套算法与C++实现程序，用于计算含标量场的五维膜世界模型（5D braneworld models）的完全非线性演化。体场（bulk field）可实现额外维度的稳定化，但同时会使系统动力学变得复杂，因此基于有效四维理论（effective 4D theory）的解析计算通常仅在体构型为静态，或额外维度演化可忽略时才可靠。在…… 程序名称：BRANECODE 目录编号：ADVX_v1_0 问题本质： 针对含体标量场与任意势函数的五维时空中的两个余一维膜的动力学问题。该系统的动力学由五维爱因斯坦引力场方程以及膜位置处的连接条件所支配。 Mendeley数据中《计算机物理学报》（CPC）库内的该程序版本：ADVX_v1_0; BRANECODE; 10.1016/j.cpc.2005.04.009 本程序源自贝尔法斯特女王大学（1969-2018年）维护的《计算机物理学报》程序库。