Collapse of massive fields in AdS
Presenting author: Jorge Lopes
Gravitational collapse in asymptotically anti-de Sitter spacetime has a rich but poorly-understood structure. Here, we investigate the collapse of massive scalar fields in anti-de Sitter, with enlarged freedom in the initial data setup, such as several distinct wavepackets, gravitationally interacting with each other. Massive fields, which have a fully resonant spectra, collapse at (arbitrarily?) small amplitude for some classes of initial data, and form oscillating stars for others. We find evidence that initial data consisting on several wavepackets may allow efficient exchange of energy between them, and delay the collapse substantially, or avoid it altogether. When the AdS boundary is artificially changed so that the spectrum is no longer resonant, cascading to higher frequencies may still be present. Finally, we comment on the asymptotically flat counterparts.