Strong Gravity

We present the Einstein-Maxwell-Klein-Gordon system in hyperboloidal slices, a recent formulation for extracting signals at future null infinity. As far as we know, this is the first time this setup is evolved with a common formulation like BSSN/Z4. Using hyperboloidal slices, contrary to other recent methods like Cauchy-Characteristic Matching, we can continuously reach future null infinity.

The Great Impersonation: W-Solitons as Prototypical Black Hole Microstates

Alexandru Dima, Pierre Heidmann, Marco Melis, Paolo Pani, Gela Patashuri

Spontaneous scalarization of black holes may be understood in the language of symmetry breaking, with the scalar field condensate serving as order parameter. This motivates the study of theories with more interesting symmetry breaking patterns, i.e. beyond the simplest real scalar case.

We present a general inverse scattering formalism for systems with quasi-zero curvature representations, extending the tools of integrable models to the quasi-integrable setting.

The Great Impersonation: W-Solitons as Prototypical Black Hole Microstates

Alexandru Dima, Pierre Heidmann, Marco Melis, Paolo Pani, Gela Patashuri