3 papers
gr-qc2025
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…
gr-qc2025
Nonradial stability of topological stars
Alexandru Dima, Marco Melis, Paolo Pani
Topological stars are regular, horizonless solitons arising from dimensional compactification of Einstein-Maxwell theory in five dimensions, which could describe qualitative proper…
gr-qc2025
Growing black-hole hair in nonminimally coupled biscalar gravity
Chloe Richards, Alexandru Dima, Deborah Ferguson +1
Black holes offer a unique laboratory for fundamental physics and are crucial for probing theories beyond Einstein's theory of General Relativity. In this paper, we consider 4D eff…