2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117077We investigate propagation of slow-light solitons in atomic media described by the nonlinear $Λ$-model. Under a physical assumption, appropriate to the slow light propagation, we reduce the $Λ$-scheme to a simplified nonlinear model, which is also relevant to 2D dilatonic gravity. Exact solutions describing various regimes of stopping slow-light solitons can then be readily derived.4 pages, 1 figureQuantum Physicstext