Cauchy Evolution of Asymptotically Global AdS Spacetimes with No Symmetries

Add to your list(s) Download to your calendar using vCal

• Lorenzo Rossi (Queen Mary University)
• Friday 05 March 2021, 13:00-14:00
• Zoom.

If you have a question about this talk, please contact Justin Ripley.

I will present the first proof-of-principle Cauchy evolutions of asymptotically global AdS spacetimes with no imposed symmetries, employing a numerical scheme based on the generalized harmonic form of the Einstein equations. In this scheme, the main difficulty in removing all symmetry assumptions can be phrased in terms of finding a set of generalized harmonic source functions that are consistent with AdS boundary conditions. In four spacetime dimensions, we detail an explicit set of source functions that achieves evolution in full generality. A similar prescription should also lead to stable evolution in higher spacetime dimensions, various couplings with matter fields, and on the Poincaré patch. We apply this scheme to obtain the first long-time stable 3+1 simulations of four dimensional spacetimes with a negative cosmological constant, using initial data sourced by a massless scalar field. I will show preliminary results of gravitational collapse with no symmetry assumptions, and the subsequent quasi-normal mode ringdown to a static black hole in the bulk, which corresponds to evolution towards a homogeneous state on the boundary.

This talk is part of the DAMTP Friday GR Seminar series.

This talk is included in these lists:

• All CMS events
• All Talks (aka the CURE list)
• CMS Events
• Cambridge Astronomy Talks
• Cosmology lists
• Cosmology, Astrophysics and General Relativity
• DAMTP Friday GR Seminar
• DAMTP info aggregator
• Interested Talks
• Kavli Institute for Cosmology Talk Lists
• Priscilla
• School of Physical Sciences
• Zoom
• bld31

Note that ex-directory lists are not shown.