Dimension-Dependence of the Critical Exponent in Spherically Symmetric Gravitational Collapse

Abstract

We study the critical behaviour of spherically symmetric scalar field collapse to black holes in spacetime dimensions other than four. We obtain reliable values for the scaling exponent in the supercritical region for dimensions in the range $3.5\le D\le 14$. The critical exponent increases monotonically to an asymptotic value at large $D$ of $\gamma \sim 0.466$. The data is well fit by a simple exponential of the form: $\gamma \sim 0.466(1-e^{-0.408D})$.

5 pages, including 7 figures New version contains more data points, one extra graph and more accurate error bars. No changes to results

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