Spherically symmetric scalar field collapse

Abstract

It is shown that a scalar field, minimally coupled to gravity may have collapsing modes even when the energy condition is violated, that is, for $(\rho +3p)<0$. This result may be useful in the investigation of the possible clustering of dark energy. All the examples dealt with have apparent horizons which form before the formation of the singularity. The singularities formed are shell focusing in nature. The density of the scalar field distribution is seen to diverge at singularity. The Ricci scalar also diverges at the singularity. The interior spherically symmetric metric is matched with exterior Vaidya metric at the hypersurface and the appropriate junction conditions are obtained.

10 pages, 4 figures; Accepted for publication in Pramana- Journal of Physics, 2012

References in corpus (2)

• Spherically symmetric dissipative anisotropic fluids: A general study
• Gravitational collapse of homogeneous scalar fields

Cited by in corpus (6)

• Gravitational Collapse in General Relativity and in $R^2$-gravity: A Comparative Study
• Self-similar scalar field collapse
• Scalar field collapse in a conformally flat spacetime
• Scalar field collapse in Gauss-Bonnet gravity
• Scalar Field Collapse with an exponential potential
• Electromagnetic effect on anisotropic scalar field collapse in higher curvature gravity