Perturbations of Solitonic Boson Stars: Nonlinear Radial Stability and Binding Energy
Abstract
Abstract We study the nonlinear radial stability of boson stars with a solitonic potential across the entire parameter space, focusing especially on families of solutions that support ultracompact models on the perturbatively stable branch. Using a dimensional reduction of the CCZ4 formulation of numerical relativity, we dynamically evolve these models with both internal and external perturbations. We find in particular that there are perturbatively stable models with positive binding energy that do not effectively disperse even under explicit perturbations, challenging the conventional wisdom that negative binding energy is a necessary condition for the dynamical stability of boson stars and other compact objects.
Fields of Study & Subjects
Pulsars and Gravitational Waves Research
Cold Atom Physics and Bose-Einstein Condensates
Black Holes and Theoretical Physics
Publication details
- Journal / source
- Journal of Physics Conference Series
- Publisher
- IOP Publishing
- Volume
- 3177
- Issue
- 1
- Pages
- 012047–012047
- Publication date
- 1 February 2026