Are Black Hole Orbits in N=8 Supergravity Solvable?
by
Zahra Zahraee(McGill U.)
→
Europe/Berlin
SR2 (DESY Hamburg)
SR2
DESY Hamburg
Description
In this talk, we study the dynamics of bound states of two extremal black holes in N=8 Supergravity. In particular, we want to understand whether such bound systems possess hidden symmetries to make them integrable or not. The motivation is that a "solvable" model of gravity can be highly interesting as a testbed for various perturbative and nonperturbative methods and can be an illmunating tool for studying various aspect of quantum gravity. Being maximally supersymmetric, N=8 is the best candidate to be such a symmetrical model of gravity. To look for the hidden symmetries, we study the precession of the orbit in the aforementioned two black holes system. This is because the lack of precession, or closure of the orbits, is the consequence of such a symmetries which combined with the spherical symmetry makes the system integrable. We study this problem in post-Newtonian expansion as well as probe limit. We find that the precession is absent in both limits, hinting for the integrability of the system.
