| 非线性引力理论中整体宇宙弦的吸积 |
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| 引用本文： | 严家利,陈鹏.非线性引力理论中整体宇宙弦的吸积[J].湖北大学学报(自然科学版),1998,20(3):233-236. |
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| 作者姓名： | 严家利 陈鹏 |
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| 作者单位： | [1]湖北大学理论物理研究所 [2]西南师范大学电化教育系 |
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| 摘 要： | 在非线性二次引力理论中，探讨了整体宇宙弦的引力场，与爱因斯坦引力理论的结果相比较，其度规获得了一个相当于长程牛顿势的修正，表明在远处有一高阶的吸引力。并在此基础上讨论了运动的整体宇宙弦的吸积问题，弦尾部的吸积效应也作了相应的修正。
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| 关 键 词： | 引力理论 整体宇宙弦 吸积 非线性引力理论 |
The Accretion of Global Cosmic Strings in the Nonlinear Gravitational Theory |
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| Yan Jiali.The Accretion of Global Cosmic Strings in the Nonlinear Gravitational Theory[J].Journal of Hubei University(Natural Science Edition),1998,20(3):233-236. |
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| Authors: | Yan Jiali |
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| Abstract: | The gravitational field of global cosmic strings is studied in the nonlinear quadratic gravitational theory, and is compared with the result in Einstein's theory The metric acquires modifications which correspond to a longrange Newtonian potential, implying at large distances a highorder attractive force On the basis of this, the accretion of moving global cosmic strings is discussed The accreting effect on strings' tail is also modified |
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| Keywords: | Gravitational theory Global cosmic string Metric Newtonian potential Accretion |
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