106 citations · 267 across the 14 of their papers we have counts for
8 papers · 1 filter
Holography of quarter-BPS AdS bubbles
Bogdan Ganchev, Anthony Houppe
We consider the quarter-BPS sector of the AdS/CFT duality, and provide a precise matching between specific CFT states and supergravity geometries beyond the linearized appr…
Microstrata
Bogdan Ganchev, Stefano Giusto, Anthony Houppe +2
Microstrata are the non-extremal analogues of superstrata: they are smooth, non-extremal (non-BPS) solitonic solutions to IIB supergravity whose deep-throat limits approximate blac…
On Supersymmetric Multipole Ratios
Bogdan Ganchev, Daniel R. Mayerson
Four-dimensional supersymmetric black holes are static and so have all vanishing multipoles. Nevertheless, it is possible to define finite multipole ratios for these black holes, b…
Elliptical and Purely NS Superstrata
Bogdan Ganchev, Anthony Houppe, Nicholas P. Warner
We analyze the BPS equations in the ``superstratum sector'' of three-dimensional gauged supergravity. We obtain multi-parameter supersymmetric solutions that include elliptical def…
AdS holography for non-BPS geometries
Bogdan Ganchev, Stefano Giusto, Anthony Houppe +1
By using the approach introduced in arXiv:2107.09677 we construct non-BPS solutions of 6D supergravity coupled to two tensor multiplets as a perturbation of AdS$_3\times S^…
New Superstrata from Three-Dimensional Supergravity
Bogdan Ganchev, Anthony Houppe, Nicholas P. Warner
We find a two-parameter family of {\it generalized superstrata} that emerge as smooth, supersymmetric solutions in three-dimensional gauged supergravity coupled to additional scala…
Q-Balls Meet Fuzzballs: Non-BPS Microstate Geometries
Bogdan Ganchev, Anthony Houppe, Nicholas Warner
We construct a three-parameter family of non-extremal microstate geometries, or "microstrata," that are dual to states and deformations of the D1-D5 CFT. These families are non-ext…
Superradiant instability in AdS
Bogdan Ganchev
The phenomenon of superradiance in the context of asymptotically global AdS spacetimes is investigated with particular accent on its effect on the stability of the systems under co…