2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/56961This is a continuation of the study of the theory of quantum stochastic dilation of completely positive semigroups on a von Neumann or $C^*$ algebra, here with unbounded generators. The additional assumption of symmetry with respect to a semifinite trace allows the use of the Hilbert space techniques, while the covariance gives rise to better handle on domains. An Evans-Hudson flow is obtained, dilating the given semigroup.Mathematical PhysicsFunctional Analysis81S25, 46L53text