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Several extensions of the Standard Model of particle physics containadditional scalars implying a more complex scalar potential compared to that ofthe Standard Model. In general these potentials allow for charge and/or colorbreaking minima besides the desired one with correctly broken SU(2)_L timesU(1)_Y . Even if one assumes that a metastable local minimum is realized, onehas to ensure that its lifetime exceeds that of our universe. We introduce anew program called Vevacious which takes a generic expression for a one-loopeffective potential energy function and finds all the tree-level extrema, whichare then used as the starting points for gradient-based minimization of theone-loop effective potential. The tunneling time from a given input vacuum tothe deepest minimum, if different from the input vacuum, can be calculated. Theparameter points are given as files in the SLHA format (though is notrestricted to supersymmetric models), and new model files can be easilygenerated automatically by the Mathematica package SARAH. This code usesHOM4PS2 to find all the minima of the tree-level potential, PyMinuit to followgradients to the minima of the one-loop potential, and CosmoTransitions tocalculate tunneling times.

Vevacious: A Tool For Finding The Global Minima Of One-Loop Effective Potentials With Many Scalars