Dieses Dokument darf im Rahmen von § 53 UrhG zum eigenen Gebrauch kostenfrei heruntergeladen, gelesen, gespeichert und ausgedruckt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.This document may be downloaded, read, stored and printed for your own use within the limits of § 53 UrhG but it may not be distributed via the internet or passed on to external parties.Schwieger, KayWagner, Stefan2024-10-162024-10-162021https://oa.tib.eu/renate/handle/123456789/16949https://doi.org/10.34657/15971Given a free action of a compact Lie group G on a unital C*-algebra A and a spectral triple on the corresponding fixed point algebra AG, we present a systematic and in-depth construction of a spectral triple on A that is build upon the geometry of AG and G. We compare our construction with a selection of established examples.eng510Lifting Spectral Triples to Noncommutative Principal BundlesReport