Giacomo Fantini

A relativistic superfluid condensate on a Schwarzschild background: regular core, sonic point, and no-go constraints on back-reaction

We study matter infalling inside a black hole as a relativistic superfluid described by a complex scalar field in the Madelung formulation, with a Ginzburg–Landau-type potential on a fixed Schwarzschild background. The model yields exact flux conservation, a closed-form effective...