2018/12/12 by Iosif Bena, Emil J. Martinec, Robert Walker +1 · 1 citation
Physics and Astronomy · #Angular momentum #Astrophysical Phenomena and Observations #BTZ black hole #Black Holes and Theoretical Physics #Charge (physics) #Dual (grammatical number) #Ministate #Naked singularity #Quantum Electrodynamics and Casimir Effect #Ring singularity #Scrambling #Singularity #hep-th
paper · pdf · doi:10.1007/jhep04(2019)126
24 pages
arxiv created 2018/12/12 · openalex created_date 2018/12/22 · openalex publication_date 2019/04/01 · arxiv updated 2019/05/22 · openalex updated_date 2026/08/06
A bstract Geodesic probes in certain horizonless microstate geometries experience extreme tidal forces long before reaching the region where these geometries differ significantl from the extremal BTZ black hole. The purpose of this paper is to show that this behavior is a universal feature of all geometries that have a long BTZ throat that terminates in a cap, regardless of the details of this cap. Hence, incoming probes will scramble into the microstate structure before they encounter the region where the charges of the solution are sourced, and the reason for this premature scrambling is the amplification of tiny geometrical deviations by the relativistic speeds of the probes. To illustrate the phenomenon, we construct a new family of smooth horizonless superstratum microstate geometries, dual to D1-D5 CFT states whose momentum charge is carried by excitations on CFT strands of length k . We also show that, in the large- k limit, these new superstrata resemble a blackened supertube solution everywhere except in the near-supertube region. Thus they resolve the singularity caused by the naive back-reaction of modes with non-linear instabilities near evanescent ergosurfaces.