"Solving the two body problem in Einstein's gravity"
Prof. Barak Kol Racah Institute of Physics, Hebrew University
Einstein's gravity and the standard model of particle physics describe
our knowledge of the fundamental interactions. Following a period of
fragmentation and separate development of the two theories, several
important connections came to light in recent years. In this talk it
will be explained how effective field theory techniques which
originate in particle physics bring insight and results into the
twobody problem in Einstein's gravity. This theoretical problem is
essential for the worldwide effort to detect gravitational waves and
use them for a new astronomy.
We shall discuss how deep concepts of perturbative quantum field
theory appear in classical field theory, including Feynman rules,
regularizing divergences and renormalization. We shall also explain a
novel decomposition of Einstein's metric field in the nonrelativistic
limit.
Host:
Prof. Nissan Itzhaki, x6490
