Non-topological Domain Walls in a Model with Broken Supersymmetry

We study non-topological, charged planar walls (Q-walls) in the context of aparticle physics model with supersymmetry broken by low-energy gauge mediation.Analytical properties are derived within the flat-potential approximation forthe flat-direction raising potential, while a numerical study is performedusing the full two-loop supersymmetric potential. We analyze the energetics offinite-size Q-walls and compare them to Q-balls, non-topological solitonspossessing spherical symmetry and arising in the same supersymmetric model.This allow us to draw a phase diagram in the charge-transverse length plane,which shows a region where Q-wall solutions are more stable than Q-balls.