2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/132924Q-balls arise in particle theories with U(1) global symmetry. The coupling of the corresponding scalar field to fermions leads to Q-ball evaporation. In this paper we consider the oposite problem, the case where a Q-ball absorbs particles to grow. In particular we shall use the exact quantum mechanical description of fermions interacting with a Q-ball to solve the problem. Results show that Q-ball condensation can be another mechanism for Q-ball creation.High Energy Physics - TheoryHigh Energy Physics - Phenomenologytext