SimpleBounce : a simple package for the false vacuum decay
  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.
