Scalar Field Collapse with an exponential potential

Abstract

An analogue of the Oppenheimer-Synder collapsing model is treated analytically, where the matter source is a scalar field with an exponential potential. An exact solution is derived followed by matching to a suitable exterior geometry, and an analysis of the visibility of the singularity. In some situations, the collapse indeed leads to a finite time curvature singularity, which is always hidden from the exterior by an apparent horizon.

11 pages, 2 figures; accepted for publication in Gen. Relativ. Gravit

References in corpus (5)

• Dynamics of dark energy
• Collapsing spherical stars in f(R) gravity
• Gravitational collapse in f(R) gravity for a spherically symmetric spacetime admitting a homothetic Killing vector
• Finding and using exact solutions of the Einstein equations
• Collapse of non-spherically symmetric scalar field distributions