Barak Kol (Hebrew University, Jerusalem): The effective field theory approach to the two body problem in Einstein's gravity

Friday 29 Aug 2014, 14:00 → 15:00 Europe/Budapest

Tanacsterem

The effective field theory approach uses field theory ideas and techniques to perturbatively solve the two-body problem in the slow velocity post-Newtonian limit. Central notions include the two-body effective action, field elimination through Feynman diagrams, a non-relativistic decomposition of Einstein's field, and finally divergences, their regularization and renormalization. This study is important for the ongoing observational effort to detect gravitational waves and it complements numerical simulations.