| Absorption Cross Section of Static Einstein-Maxwell Dilation Axion Black Hole for Scalar Particles |
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| 作者姓名： | LIU Chang-Qing JING Ji-Liang |
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| 作者单位： | Institute of Physics and Department of Physics, Hunan Normal University, Changsha 410081, China |
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| 基金项目： | The project supported by National Natural Science Foundation of China under Grant No. 10473004, the FANEDD under Grant No. 200317, the SRFDP under Grant No. 20040542003, and the Key Project of Natural Science Foundation of Hunan Province of China under Grant No. 05JJ0001 |
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| 摘 要： | The absorption cross section of the static Einstein-Maxwell dilaton axion （EMDA） black hole for scalar particles is investigated. It is shown that the ratio of the absorption cross section of the EMDA black hole to that of the Schwarzschild black hole decreases as the absolute value of the dilaton increases, and it becomes zero as the dilaton tends to its extremal value. It is also shown that the absorption cross section decreases as both the v and the absolute value of the dilaton increase, and it decreases as the mass of the particle decreases.
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| 关 键 词： | 黑洞 静态爱因斯坦-麦克斯韦膨胀轴子 吸收截面 标量粒子 |
| 修稿时间： | 2006-06-05 |
Absorption Cross Section of Static Einstein-Maxwell Dilation Axion Black Hole for Scalar Particles |
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| LIU Chang-Qing JING Ji-Liang.Absorption Cross Section of Static Einstein-Maxwell Dilation Axion Black Hole for Scalar Particles[J].Communications in Theoretical Physics,2007,47(4):665-668. |
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| Authors: | LIU Chang-Qing JING Ji-Liang |
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| Abstract: | The absorption cross section of the static Einstein-Maxwell dilaton axion (EMDA) black hole for scalar particles is investigated.It is shown that the ratio of the absorption cross section of the EMDA black hole to that of the Schwarzschild black hole decreases as the absolute value of the dilaton increases,and it becomes zero as the dilaton tends to its extremal value.It is also shown that the absorption cross section decreases as both the v and the absolute value of the dilaton increase,and it decreases as the mass of the particle decreases. |
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| Keywords: | absorption cross section black hole dilaton |
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