BubbleProfiler: finding the field profile and action for cosmological phase transitions

Understand

We present BubbleProfiler, a C++ software package for finding field profiles in bubble walls and calculating the bounce action during phase transitions involving multiple scalar fields.

• Our code uses a recently proposed perturbative method for potentials with multiple fields and a shooting method for single field cases.
• BubbleProfiler is constructed with modularity, flexibility and practicality in mind.
• These principles extend from the input of an arbitrary potential with multiple scalar fields in various forms, through the code structure, to the testing suite.