Particle collisions on near horizon extremal Kerr background

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25 Citations (Scopus)

Abstract

Recently, Bañados, Silk, and West analyzed a collision of two particles near the horizon of the extremal Kerr black hole and demonstrated that the energy in the center-of-mass frame can be arbitrarily large provided the angular momentum of one of the colliding particles takes a special value. As is known, the vicinity of the extremal Kerr black hole horizon can be viewed as a complete vacuum spacetime in its own right. In this work, we consider a collision of two neutral particles within the context of the near horizon extremal Kerr geometry and demonstrate that the energy in the center-of-mass frame is finite for any admissible value of the particle parameters. An explanation of why the two approaches disagree on the Bañados-Silk-West effect is given.

Original languageEnglish
Article number027505
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume88
Issue number2
DOIs
Publication statusPublished - 26 Jul 2013

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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