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Abstract: The regularized signum-Gordon potential has a smooth minimum and is linear inthe modulus of the field value for higher amplitudes. The Q-ball solutions inthis model are investigated. Their existence for charges large enough isdemonstrated. In three dimensions numerical solutions are presented and theabsolute stability of large Q-balls is proved. It is also shown, that thesolutions of the regularized model approach uniformly the solution of theunregularized signum-Gordon model. From the stability of Q-balls in theregularized model follows the stability of the solutions in the originaltheory.



Autor: Jakub Lis

Fuente: https://arxiv.org/







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