M. Wollenberg, A NOTE ON THE TYPE OF LOCAL VONNEUMANN-ALGEBRAS IN QUANTUM-FIELD THEORY OVER CURVED SPACE-TIME, Mathematische Nachrichten, 161, 1993, pp. 45-53
It is shown that there are relations between the Connes invariant for
local v. Neumann algebras belonging to different curved space-times pr
ovided these local algebras are connected by a certain asymptotic cond
ition. This asymptotic condition is implied by a scaling limit conditi
on as well as by a condition of connectedness by large translations.