# Collisional Penrose process of 4D rotational Einstein-Gauss-Bonnet black holes

• The collisional Penrose process of massive spinning particles in a rotational Einstein-Gauss-Bonnet (EGB) black hole background is studied. By numerically solving the equations of motion for spinning particles, we find that the energy extraction efficiency increases monotonically with the decrease of the EGB coupling parameter $\alpha$. Moreover, the efficiency $\eta$ increases as the particle spin s grows. We also find that the energy extraction efficiency increases with the decrease of the EGB coupling parameter $\alpha$. When the EGB coupling constant $\alpha=0$, our results reduce to the Kerr case, which has been investigated previously.

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Yunlong Liu and Xiangdong Zhang. The collisional Penrose process of 4D rotational Einstein-Gauss-Bonnet black holes[J]. Chinese Physics C.
Yunlong Liu and Xiangdong Zhang. The collisional Penrose process of 4D rotational Einstein-Gauss-Bonnet black holes[J]. Chinese Physics C.
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沈阳化工大学材料科学与工程学院 沈阳 110142

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## Collisional Penrose process of 4D rotational Einstein-Gauss-Bonnet black holes

###### Corresponding author: Xiangdong Zhang, scxdzhang@scut.edu.cn
• Department of Physics, South China University of Technology, Guangzhou 510641, China

Abstract: The collisional Penrose process of massive spinning particles in a rotational Einstein-Gauss-Bonnet (EGB) black hole background is studied. By numerically solving the equations of motion for spinning particles, we find that the energy extraction efficiency increases monotonically with the decrease of the EGB coupling parameter $\alpha$. Moreover, the efficiency $\eta$ increases as the particle spin s grows. We also find that the energy extraction efficiency increases with the decrease of the EGB coupling parameter $\alpha$. When the EGB coupling constant $\alpha=0$, our results reduce to the Kerr case, which has been investigated previously.

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