Non-topological solitons are a type of soliton that differ from their topological counterparts in the manner in which they maintain their shape and stability. Solitons are stable, localized wave packets that arise in various fields of physics, often characterized by their ability to propagate without changing shape due to a balance between nonlinearity and dispersion.
Articles by others on the same topic
A non-topological soliton is a localized finite-energy field configuration whose existence or stability is not protected by a nontrivial topological charge. A conserved ordinary Noether charge can instead obstruct its decay. A Q-ball is a standard complex-scalar example: its profile is localized while its phase rotates in time.