SimpleBounce : a simple package for the false vacuum decay

TL;DR

SimpleBounce is a C++ software package that efficiently computes false vacuum decay solutions with high accuracy, based on a novel flow equation approach, applicable to models with up to eight scalar fields.

Contribution

The paper introduces SimpleBounce, a new C++ package utilizing a flow equation to solve the bounce problem for false vacuum decay, achieving rapid and precise calculations.

Findings

Calculates bounce action with 0.1% accuracy in 0.1 seconds.

Applicable to models with 1 to 8 scalar fields.

Provides an open-source tool for vacuum decay analysis.

Abstract

We present SimpleBounce, a C++ package for finding the bounce solution for the false vacuum decay. This package is based on a flow equation which is proposed by the author and solves Coleman-Glaser-Martin's reduced problem: the minimization problem of the kinetic energy while fixing the potential energy. The bounce configuration is obtained by a scale transformation of the solution of this problem. For models with 1--8 scalar field(s), the bounce action can be calculated with O(0.1) % accuracy in O(0.1) s. This package is available at https://github.com/rsato64/SimpleBounce.