News:

• Amplitudes and Periods,  Decembre 3-7, 2012 IHES Bures-sur-Yvette
• Cargèse School Gauge theory and String theory, June 4-16, 2012
• Seminar on experimental and theoretical aspects of gravity at IHÉS
• Master student projects and PhD subjects
  

Research interests:

• Curriculum Vitae
• Research articles :  SPIRES | Zentralblatt MATH | Google Scholar | Collaborators
• Lectures notes and other write-up | Books
• Organisation of  conferences and international thematic schools