Charged dilaton black hole in 2+1 dimensions as a particle accelerator

Abstract

In this paper we have studied particle collisions around a charged dilaton black hole in 2+1 dimensions. This black hole is a solution to the low energy string action in 2+1 dimensions. Time-like geodesics for charged particles are studied in detail. The center of mass energy for two charged particles colliding closer to the horizon is calculated and shown to be infinite if one of the particles has the critical charge.

Accepted to be published in Modern Physics Letters A

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• Three Dimensional Black Hole in the Low Energy Heterotic String Theory
• Quasibound states of massive charged scalars around dilaton black holes in $2+1$ dimensions: Exact frequencies