Stability of gravitating charged-scalar solitons in a cavity

Understand

We present new regular solutions of Einstein-charged scalar field theory in a cavity.

• The system is enclosed inside a reflecting mirror-like boundary, on which the scalar field vanishes.
• The mirror is placed at the zero of the scalar field closest to the origin, and inside this boundary our solutions are regular.
• We study the stability of these solitons under linear, spherically symmetric perturbations of the metric, scalar and electromagnetic fields.