Quasi--balls in massless scalar fields
Phys. Rev. E 112, 044220 – Published 16 October, 2025
DOI: https://doi.org/10.1103/wzbm-5kcn
Abstract
We study long-term evolution of radiating quasi--balls in dimensional models without mass threshold. Two different models are considered, the model with a rational modification of the usual -ball sextic potential and the model of a -ball in a box with outgoing boundary conditions. We find that the outgoing boundary conditions modify the angular frequency of quasi--balls which becomes complex-valued. The quasi--balls decay initially very similarly but, in the last stage, quasi--balls in a box become linear resonances, whereas in the rationally modified model, they decay according to some power law.
