Black tsunamis and naked singularities in AdS

A bstract We study the evolution of Gregory-Laflamme instability for black strings in global AdS spacetime, and investigate CFT dual formation a bulk naked singularity. Using an effective theory large D limit, we uncover rich variety dynamical behaviour, depending on thickness string initial perturbations. These include: inflows horizon generators from asymptotic boundary (a ‘black tsunami’); pinch-off that likely reveals singularity; competition between these two behaviours, such as nakedly singular subsequently gets covered by tsunami. The holographic describes different patterns heat flow due to Hawking radiation holes placed at antipodes spherical universe. also present model describes, any , burst stress-energy tensor when signal self-similar singularity reaches boundary. shows shear components stress diverge finite time, while energy density pressures vanish.