Eur. Phys. J. C (2020) 80: 387
https://doi.org/10.1140/epjc/s10052-020-7920-z

Regular Article - Theoretical Physics

Pair production of scalars around near-extremal Kerr-Sen black holes

Center for Theoretical Physics, Department of Physics, Parahyangan Catholic University, Jalan Ciumbuleuit 94, Bandung, 40141, Indonesia

^* e-mail: haryanto.siahaan@unpar.ac.id

Received: 9 November 2019
Accepted: 13 April 2020
Published online: 8 May 2020

Abstract

We investigate the charged scalar pair production near the horizon of a near-extremal Kerr-Sen black holes. The condition for pair production to occur has relation to the violation of Breitenlohner–Freedman bound in an space. The method employed in this work has been used to show the pair production in the near-horizon of a near-extremal Kerr–Newman black hole and its non-rotating case as well. We also discuss the static limit of our result.