Thermodynamics of Non-Topological Solitons
| dc.creator | Laine, M. | |
| dc.creator | Shaposhnikov, M. | |
| dc.date | 1998-04-06 | |
| dc.date.accessioned | 2026-07-07T10:33:39Z | |
| dc.date.available | 2026-07-07T10:33:39Z | |
| dc.description | In theories with low energy supersymmetry breaking, the effective potential for squarks and sleptons has generically nearly flat directions, V(phi) ~ M^4 (log(phi/M))^n. This guarantees the existence of stable non-topological solitons, Q-balls, that carry large baryon number, B >> (M/m_p)^4, where m_p is the proton mass. We study the behaviour of these objects in a high temperature plasma. We show that in an infinitely extended system with a finite density of the baryon charge, the equilibrium state is not homogeneous and contains Q-balls at any temperature. In a system with a finite volume, Q-balls evaporate at a volume dependent temperature. In the cosmological context, we formulate the conditions under which Q-balls, produced in the Early Universe, survive till the present time. Finally, we estimate the baryon to cold dark matter ratio in a cosmological scenario in which Q-balls are responsible for both the net baryon number of the Universe and its dark matter. We find out naturally the correct orders of magnitude for M ~ 1...10 TeV: η~ 10^{-10} (M/TeV)^{-2} (B/10^{26})^{-1/2}. | |
| dc.description | 31 pages, 5 figures | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9804237 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9804237 | |
| dc.identifier | Nucl.Phys.B532:376-404,1998 | |
| dc.identifier | doi:10.1016/S0550-3213(98)00474-X | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/179193 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Thermodynamics of Non-Topological Solitons | |
| dc.type | text |