A NEW CLASS OF NONTOPOLOGICAL SOLITONS

We construct a new class of non-topological solitons (NTSS) with scalar self-interaction term K phi(4). Because of the scalar self-interaction, there is a maximum size for these objects. There exists a critical value K-crit for the coupling. For K > K-crit there are no stable non-topological solitons. In the thin-walled limit, we show the explicit solutions of NTS With scalar self-interaction and/or gauge interaction. In the case of gauged NTS, soliton becomes a superconductor.