From 1995 he was a Profil2 Fellow of the Swiss Nationalfonds at ETH Zurich. In 1997 he was elected as a Professor at the Yukawa Institute for Theoretical Physics of the Kyoto University in Japan. His ...

Since 2009 Professor at the Yukawa Institute for Theoretical Physics, Kyoto University, Japan. Since 2018 Director at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute) in ...