Abstract
We of -balls in Dirac-Born-Infeld type field theory, whose action includes a nonlinear kinetic term, . Specifically, for two potentials, and , we survey equilibrium solutions for the whole parameter space and analyze their stability through the use of catastrophe theory. Our analysis shows that and models fall into fold catastrophe and cusp catastrophe types, respectively, just as for canonical -balls. We also find that, as long as the absolute minimum of is located at , equilibrium solutions exist without any additional constraint on charge no matter how large (nonlinearity) is.
4 More- Received 20 September 2016
DOI:https://doi.org/10.1103/PhysRevD.94.116001
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