Born 1966. Study of physics at Tokyo Institute of Technology, doctorate at Kyoto University (1994). Assistant Professor at Osaka University (1993-2000), Visiting Professor at University of Illinois at Urbana-Champaign, USA (1998-2000), Associate Professor at University of Tokyo (2000-2008). 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 Potsdam.