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Branes and Antibranes in AdS: The Impossible States in the CFT Gap
Roberto Emparan, Pierre Heidmann
We construct a new family of type IIB supergravity solutions corresponding to states of the D1-D5-P-KKm system that carry the same charges and energy as the non-extremal four-charg…
Asymptotically Flat Rotating Topological Stars
Pierre Heidmann, Paolo Pani, Jorge E. Santos
We construct a new class of smooth, horizonless, non-supersymmetric solutions in five-dimensional minimal supergravity, which we call rotating topological stars. Built from a Kerr-…
The Great Impersonation: -Solitons as Prototypical Black Hole Microstates
Alexandru Dima, Pierre Heidmann, Marco Melis +2
We analyze a new class of static, smooth geometries in five-dimensional supergravity, dubbed -solitons. They carry the same mass and charges as four-dimensional Reissn…
Fermionic Love of Black Holes in General Relativity
Sumanta Chakraborty, Pierre Heidmann, Paolo Pani
Black holes in General Relativity exhibit a remarkable feature: their response to static scalar, electromagnetic, and gravitational perturbations -- as quantified by the so-called…
Tidal Disruption in Topological Solitons and the Emergence of an Effective Horizon
Pierre Heidmann, Gela Patashuri
We compute the dynamics of particles and strings falling into smooth horizonless spacetimes that match the Schwarzschild black hole but replace its horizon with a smooth cap in sup…
Black hole mimickers: from theory to observation
Cosimo Bambi, Ramy Brustein, Vitor Cardoso +16
The black hole paradigm, while remarkably successful, raises fundamental questions-both classical and quantum-about the nature of spacetime, horizons, and singularities. Black hole…