Jorge Rocha

CENTRA - Instituto Superior Técnico

Phase diagram for non-axisymmetric plasma balls and black holes

The fluid-gravity correspondence provides a precise mapping between gravitational dynamics and hydrodynamics. Such a duality has proven useful to better understand the rich phase structure of black holes in higher dimensions, as well as their stability, from the simpler fluid dynamics description. In particular, plasma balls and rings emerge as fluid holographic duals of black holes and black rings in Scherk-Schwarz AdS gravity. Recently, plasma balls spinning above a critical rotation were found to be unstable against m-lobed perturbations. In the phase diagram of stationary solutions the threshold of the instability signals a bifurcation to a new phase of non-axisymmetric configurations. In this talk I will exhibit explicitly this family of solutions and represent them in the phase diagram. To finish, I will discuss the implications of our results for the gravitational system and argue that this m-lobed instability might become active in Myers-Perry black holes for rotations below the recently found ultraspinning instability.