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arXiv 0807.0543gr-qchep-th
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正宇宙学常数对宇宙弦的影响

Effect of a positive cosmological constant on cosmic strings

Sourav Bhattacharya, Amitabha Lahiri

摘要:

我们研究了宇宙学常数为正的时空中的宇宙Nielsen-Olesen弦。对于圆柱对称时空中的自由宇宙弦,我们计算了宇宙学常数对角亏损和零测地线弯曲的贡献。对于Schwarzschild-de Sitter时空中的宇宙弦,我们使用围绕内视界和外视界的Kruskal补丁来证明细线可以穿透它们。

英文摘要:

We study cosmic Nielsen-Olesen strings in space-times with a positive cosmological constant. For the free cosmic string in a cylindrically symmetric space-time, we calculate the contribution of the cosmological constant to the angle deficit, and to the bending of null geodesics. For a cosmic string in a Schwarzschild-de Sitter space-time, we use Kruskal patches around the inner and outer horizons to show that a thin string can pierce them.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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