Geodesics in supersymmetric microstate geometries

Abstract

It has been argued that supersymmetric microstate geometries are classically unstable. One argument for instability involves considering the motion of a massive particle near the ergosurface of such a spacetime. It is shown that the instability can be triggered by a particle that starts arbitrarily far from the ergosurface. Another argument for instability is related to the phenomenon of stable trapping of null geodesics in these geometries. Such trapping is studied in detail for the most symmetrical microstate geometries. It is found that there are several distinct types of trapped null geodesic, both prograde and retrograde. Several important differences between geodesics in microstate geometries and black hole geometries are noted. The Penrose process for energy extraction in these geometries is discussed.

References in corpus (21)

• D--branes and Spinning Black Holes
• AdS/CFT duality and the black hole information paradox
• Supergravity Microstates for BPS Black Holes and Black Rings
• Bubbling Supertubes and Foaming Black Holes
• Dual geometries for a set of 3-charge microstates
• Quasinormal-mode spectrum of Kerr black holes and its geometric interpretation
• 3-charge geometries and their CFT duals
• Smooth horizonless geometries deep inside the black-hole regime
• Adding momentum to D1-D5 system
• Slowly Decaying Waves on Spherically Symmetric Spacetimes and an Instability of Ultracompact Neutron Stars
• De-singularization by rotation
• Global Structure of Five-dimensional BPS Fuzzballs
• Geometry of D1-D5-P bound states
• Instability of non-supersymmetric smooth geometries
• Instability of supersymmetric microstate geometries
• (Non)-Integrability of Geodesics in D-brane Backgrounds
• The slowly rotating near extremal D1-D5 system as a `hot tube'
• Characterisation of the Energy of Gaussian Beams on Lorentzian Manifolds - with Applications to Black Hole Spacetimes
• A rough end for smooth microstate geometries
• Dynamics of test particles in the general five-dimensional Myers-Perry spacetime
• Supersymmetric rotating black hole spacetime tested by geodesics

Cited by in corpus (16)

• Testing the nature of dark compact objects: a status report
• Asymptotically-flat supergravity solutions deep inside the black-hole regime
• Supercharging Superstrata
• Integrability and Black-Hole Microstate Geometries
• Fuzzball Shadows: Emergent Horizons from Microstructure
• Superstrata
• Early Scrambling and Capped BTZ Geometries
• Tidal Stresses and Energy Gaps in Microstate Geometries
• The Great Escape: Tunneling out of Microstate Geometries
• One Thousand and One Bubbles
• Quasinormal modes of supersymmetric microstate geometries from the D1-D5 CFT
• Lectures on Microstate Geometries
• Gravitational Waves, Holography, and Black Hole Microstates
• Spacetime geometry fluctuations and geodesic deviation
• Stable bound orbits around static Einstein-Gauss-Bonnet black holes
• Stable bound orbits in microstate geometries