Maximal efficiency of the collisional Penrose process with spinning particles in Kerr-Sen black hole
Yunlong LiuDepartment of Physics, South China University of Technology, Guangzhou, 510641, ChinaXiangdong ZhangDepartment of Physics, South China University of Technology, Guangzhou, 510641, China
2020en
ABI
Abstract
Abstract We study the collision of two uncharged spinning particles around an extreme Kerr-Sen black hole and calculate the maximal efficiency of the energy extraction from the Kerr-Sen black hole via super Penrose process. We consider the collision of two massive particles as well as collision of a massless particle with a massive particle. We calculate the maximum efficiency for all the cases, and found that the efficiency increases as the Kerr-Sen black hole’s parameter ( $$b=1-a$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>b</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn><mml:mo>-</mml:mo><mml:mi>a</mml:mi></mml:mrow></mml:math> ) decreases.
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