| 非理想流体自引力坍缩体系的熵变 |
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| 引用本文： | 肖寄光,李元杰.非理想流体自引力坍缩体系的熵变[J].中国天文和天体物理学报,1991(3). |
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| 作者姓名： | 肖寄光 李元杰 |
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| 作者单位： | 华中理工大学物理系
(肖寄光)，华中理工大学物理系(李元杰) |
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| 摘 要： | 本文利用共动度规讨论了非理想流体开放体系在自引力作用下的坍缩过程之熵变,结果表明,形成视界之前,体系的总熵不增,这说明黑洞的高熵产生于突变之中。
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| 关 键 词： | 宇宙学 黑洞 引力坍缩 |
The Entropy Change of Imperfect Fluid Collapsing System in Which the Fluids' Own Gravitational Field Plays a Role |
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| Xiao Jiguang Li Yuanjie.The Entropy Change of Imperfect Fluid Collapsing System in Which the Fluids'''' Own Gravitational Field Plays a Role[J].Chinese Journal of Astronomy and Astrophysics,1991(3). |
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| Authors: | Xiao Jiguang Li Yuanjie |
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| Abstract: | In this paper, making use of comoving-frame, we discuss the energy-momentum tensor, the 4D-emtropy current vector and the total entropy change of imperfect fluids (oppening) collapsing system, in which its own gravitational field plays a role, before the system's horizon appears. As a result, the total entropy of collapsing system is unchanged or reduced, before the horizon appears. But according to criginal reference frames, black hole entropy is higher by a factor of about 1020 than that of the corresponding collapsing matter. Therefore, when a black hole forms, the entropy value takes a sudden change, in stead of increasing gradually to the order of magnitude of the B.H. entropy in the course of collapsing. |
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| Keywords: | cosmology-black hole-gravitational collapse |
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