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有读书笔记Radial motion into an Einstein–Rosen bridge

热1 shizhao 添加于 2010-4-12 20:06 | 2658 次阅读 | 0 个评论

  •  作 者

    Popławski NJ

  •  摘 要

    We consider the radial geodesic motion of a massive particle into a black hole in isotropic coordinates, which represents the exterior region of an Einstein–Rosen bridge (wormhole). The particle enters the interior region, which is regular and physically equivalent to the asymptotically flat exterior of a white hole, and the particle's proper time extends to infinity. Since the radial motion into a wormhole after passing the event horizon is physically different from the motion into a Schwarzschild black hole, Einstein–Rosen and Schwarzschild black holes are different, physical realizations of general relativity. Yet for distant observers, both solutions are indistinguishable. We show that timelike geodesics in the field of a wormhole are complete because the expansion scalar in the Raychaudhuri equation has a discontinuity at the horizon, and because the Einstein–Rosen bridge is represented by the Kruskal diagram with Rindler's elliptic identification of the two antipodal future event horizons. These results suggest that observed astrophysical black holes may be Einstein–Rosen bridges, each with a new universe inside that formed simultaneously with the black hole. Accordingly, our own Universe may be the interior of a black hole existing inside another universe.

  •  详细资料

    • 文献种类: Journal Article
    • 期刊名称: Physics Letters B
    • 期刊缩写: Physics Letters B
    • 期卷页: 2010年  第687卷 第2-3期 110-113页
    • ISBN: 0370-2693

  • 学科领域 自然科学 » 天文学

  •  标 签

    宇宙  虫洞 

  • 相关链接 DOI URL 

  •  shizhao 的文献笔记  订阅

    印第安纳大学的Nikodem Poplawski指出很多问题科学界几乎束手无策，比如引力无法和其它三种基本力——强核力、弱核力和电磁力——统一起来；比如导致宇宙神秘加速膨胀的暗能量，按理说引力应该会遏制或减缓膨胀速度。科学家认为创世大爆炸是始于137亿年前的一个奇点，Poplawski认为应该考虑下奇点之前又是什么。根据Poplawski的计算，超级宇宙中的一颗塌陷的巨大恒星能创造出虫洞，虫洞是通往另一个宇宙的时空通道，在虫洞的两端之间，可能存在一个类似大爆炸所需的条件，因此我们的宇宙可能在虫洞中诞生。这一理论能够解释引力的起源和宇宙的膨胀。

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