Participation in the Cluster of Excellence:
- Field of research C Criticism of religion and apologetics
- Head of project C3-20 Rewards, examinations and punishments of God as religious categories of the Interprepretation of World History in the Middle Ages
- Head of project D2-1 The Role of the Church in the Formation of Political Will in the Early and High Middle Ages (until 2018)
- Head of project D5 “Blessed Are Those Who Practice Persecution for the Sake of Righteousness”: On the Uses of Tradition in the Era of Gregory VII (until 2012)