High energy particle collisions near the bifurcation surface

Abstract

We consider generic nonextremal stationary dirty black holes. It is shown that in the vicinity of any bifurcation surface the energy of collision of two particles in the centre of mass frame can grow unbound. This is a generic property that, in particular, includes collisions near the inner black hole horizon analyzed earlier by different methods. The similar results are also valid for cosmological horizons. The case of the de Sitter metric is discussed.

13 pages. Section V on dS spacetime added. Typos corrected, title slightly changed. Final version

References in corpus (5)

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• Naked singularities as particle accelerators
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• What happens to Petrov classification on horizons of axisymmetric dirty black holes
• High-energy collisions inside black holes and their counterpart in flat space-time
• Near-horizon behavior of nonequatorial accelerated particle motion and high energy particle collisions