2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/163577We study the interaction between several fields initially in coherent states. The solution allows us to explain why coherent states remain coherent states when subject to non-Markovian dissipation. We first study the interaction between two fields and show that this is the building block of the total interaction. We give a completely algebraic solution of this system.4 pages, no figuresQuantum Physicstext