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arXiv 0901.1203hep-thgr-qc
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迈尔斯-佩里家族中的排斥反应

Repulsons in the Myers-Perry Family

Gary Gibbons, Hideo Kodama

摘要:

本文证明了具有负质量的曲率正则渐近平坦孤子包含在奇维时空的Myers-Perry族中。这些孤子没有视界,而是一个由裸CTC包围的准正则性质的圆锥奇点。这种准正则奇点对于一组离散的角动量值来说是正则的,至少对于具有UG(N)对称性的迈尔斯-佩里解来说是这样。虽然要求时间坐标在无穷远处具有周期性,空间无穷远处成为透镜空间S^{D-2}/Z_n,但相应的时空是单连通的,不能通过取覆盖时空来消除CTC。

英文摘要:

In this paper, we show that curvature-regular asymptotically flat solitons with negative mass are contained in the Myers-Perry family of odd spacetime dimensions. These solitons do not have a horizon, but instead a conical singularity of quasi-regular nature surrounded by naked CTCs. This quasi-regular singularity can be made regular for a set of discrete values of angular momentum, at least for the Myers-Perry solutions with UG(N) symmetry. Although the time coordinate is required to have a periodicity at infinity and the spatial infinity becomes a lens space S^{D-2}/Z_n, the corresponding spacetime is simply connected, and the CTCs cannot be eliminated by taking a covering spacetime.

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