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arXiv 0708.0045gr-qc
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膜世界中诱导虫洞的持久性

Persistence of Induced Wormholes in Brane Worlds

Enrico Rodrigo

摘要:

高维黑洞长期以来一直被认为是膜世界的一部分。最近的研究表明,膜世界的精神也允许考虑更高维的虫洞。当这样一个预先存在于整体中的虫洞撞击我们的宇宙时,它被认为是一个正张力的3-膜,它导致在我们的宇宙中产生一个普通维度的虫洞。这个虫洞的喉咙可能会完全收缩,夹断,从而诞生一个婴儿宇宙。或者,诱导虫洞可能会持续存在。我表明,持久性是更有可能的,并指出,持久性虫洞表现为一个粒子状的对象,其与宇宙物质的相互作用是纯粹的引力。因此,它可能被认为是一种可行的候选者,这种弱相互作用的大质量粒子长期以来被认为是冷暗物质的主要成分。

英文摘要:

Higher-dimensional black holes have long been considered within the context of brane worlds. Recently, it was shown that the brane-world ethos also permits the consideration of higher-dimensional wormholes. When such a wormhole, preexisting in the bulk, impinges upon our universe, taken to be a positive-tension 3-brane, it induces the creation in our universe of a wormhole of ordinary dimensionality. The throat of this wormhole might fully constrict, pinch off, and thus birth a baby universe. Alternatively, the induced wormhole might persist. I show that persistence is more likely and note that the persistent wormhole manifests as a particle-like object whose interaction with cosmic matter is purely gravitational. As such it may be considered a viable candidate for the sort of weakly interacting massive particle long believed to be the prime constituent of cold dark matter.

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