We are launching FindBounce, a Mathematica package for the evaluation of the Euclidean bounce action that enters the decay rate of metastable states in quantum and thermal field theories. It is based on the idea of polygonal bounces, which is a semi-analytical approach to solving the bounce equation by discretizing the potential into piecewise linear segments. This allows for a fast and robust evaluation of arbitrary potentials with specified precision and any number of scalar fields. Time cost grows linearly with the number of fields and/or the number of segments. Computation with 20 fields takes $\sim 2$ seconds with $0.5\%$ accuracy of the action. The FindBounce function is simple to use with the native Mathematica look and feel, it is easy to install, and comes with detailed documentation and physical examples, such as the calculation of the nucleation temperature. We also provide timing benchmarks with comparisons to existing tools, where applicable.

中文翻译：

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FindBounce：多场反弹动作包

我们正在推出 FindBounce，这是一个 Mathematica 软件包，用于评估进入量子和热场理论中亚稳态衰减率的欧几里得反弹作用。它基于多边形反弹的思想，这是一种通过将势离散为分段线性段来求解反弹方程的半解析方法。这允许以指定的精度和任意数量的标量场对任意势进行快速和稳健的评估。时间成本随字段数和/或段数线性增长。20 个字段的计算需要 $\sim 2$ 秒，动作的精度为 $0.5\%$。FindBounce 函数使用简单，具有原生 Mathematica 外观和感觉，易于安装，并附带详细的文档和物理示例，例如成核温度的计算。在适用的情况下，我们还提供与现有工具进行比较的时间基准。