2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/107999We investigate the effect of a spin bath on the spin transfer functions of a permanently coupled spin system. When each spin is coupled to a seperate environment, the effect on the transfer functions in the first excitation sector is amazingly simple: the group velocity is slowed down by a factor of two, and the fidelity is destabilized by a modulation of |cos Gt|, where G is the mean square coupling to the environment.4 pages, 5 figures; added referencesQuantum Physicstext