Dynamics of Collapsing Spherically Symmetric Massive Scalar Domain Wall

The collapse of a spherically symmetric thick domain wall, modeled by a scalar field, is investigated. The collapse happens in the presence of a potential with two minima. The dependence of the mass spectrum of the final Black Hole state on various parameters of the field is studied using numerical relativity techniques, in particular in a Baumgarte-Shapiro-Shibata-Nakamura(BSSN) setup. Further, qualitative and quantitative parallels are drawn between the above setup, and different existing thin shell models.