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The Uplifton
Iosif Bena, Pierre Heidmann
Almost all proposals to construct de Sitter vacua with a small cosmological constant involve flux compactifications with stabilized moduli. These give AdS vacua, which are uplifted…
Imaging Topological Solitons: the Microstructure Behind the Shadow
Pierre Heidmann, Ibrahima Bah, Emanuele Berti
We study photon geodesics in topological solitons that have the same asymptotic properties as Schwarzschild black holes. These are coherent states in string theory corresponding to…
Solitonic Excitations in AdS2
Pierre Heidmann, Anthony Houppe
We construct large families of supergravity solutions that are asymptotic to AdS and terminate with a cap that is singular in two dimensions but smooth in higher dimensions. Th…
Non-BPS Bubbling Geometries in AdS
Ibrahima Bah, Pierre Heidmann
We construct large classes of non-BPS smooth horizonless geometries that are asymptotic to AdSST in type IIB supergravity. These geometries are supported by…
Schwarzschild-like Topological Solitons
Ibrahima Bah, Pierre Heidmann, Peter Weck
We construct the first class of topological solitons in gravity that are supported by internal electromagnetic flux with vanishing net charges. The solutions are obtained in a six-…
Stability of topological solitons, and black string to bubble transition
Ibrahima Bah, Anindya Dey, Pierre Heidmann
We study the existence of smooth topological solitons and black strings as locally-stable saddles of the Euclidean gravitational action of five dimensional Einstein-Maxwell theory.…