Kerr-（anti-）de Sitter黑洞作为粒子加速器
发布时间：2018-11-17 17:39
【摘要】：在2009年,M.Banǎdos,J.Silk和S.M.West(BSW)证明了,在满足了一定条件的情况下,无宇宙学常数的背景时空中的Kerr黑洞可以作为粒子加速器,使得在其外视界面上发生碰撞的粒子的碰撞质心能发散。而所要满足的条件为：1)所考虑的平直时空中的Kerr黑洞为极端黑洞,2)其中一个碰撞粒子带有临界角动量。我们的工作就是将这个研究推广到宇宙学常数不为零的非平直时空中的Kerr黑洞,即讨论Kerr-anti-de Sitter黑洞或Kerr-de Sitter黑洞作为粒子加速器的可能性。我们发现,此时不为零的宇宙学常数在这个问题的研究中起到了重要作用：对于Kerr-anti-de Sitter黑洞,如果要使在其外视界面上发生的粒子碰撞的碰撞质心能发散,则除了满足上面两个条件外,黑洞和带有临界角动量的碰撞粒子还需要满足一定的附加条件；而对于Kerr-de Sitter黑洞,则只需要满足上述第二个条件,则在黑洞外视界面上发生的粒子碰撞的碰撞质心能就会发散。因此非极端的Kerr-de Sitter黑洞仍然可以充当粒子加速器,从而使得在其外视界面上发生的粒子碰撞的碰撞质心能达到正无穷。所以Kerr-(anti-)de Sitter黑洞也许可以作为粒子加速器用来探测普朗克能标或更高能标的物理。
[Abstract]:In 2009, M.Ban dos,J.Silk and S.M.West (BSW) proved that Kerr black holes in background spacetime without cosmological constants can be used as particle accelerators under certain conditions. The collision centroid of a particle colliding at its external interface can be divergent. The conditions to be satisfied are as follows: 1) the considered Kerr black hole in flat spacetime is an extreme black hole, 2) one of the colliding particles has critical angular momentum. Our work is to extend this study to Kerr black holes in nonplanar spacetimes with nonzero cosmological constants, that is, to discuss the possibility of Kerr-anti-de Sitter black holes or Kerr-de Sitter black holes as particle accelerators. We find that the cosmological constant, which is not zero at this time, plays an important role in the study of this problem: for a Kerr-anti-de Sitter black hole, if the collision centroid of a particle colliding at its external interface is to diverge, In addition to the above two conditions, black holes and colliding particles with critical angular momentum also need to satisfy certain additional conditions. For a Kerr-de Sitter black hole, only the second condition mentioned above is satisfied, and the collisional centroid energy of particles colliding at the outer viewing interface of the black hole will be divergent. Therefore, the non-extreme Kerr-de Sitter black hole can still act as a particle accelerator, so that the collision centroid of particles colliding at its external interface can reach a positive infinity. So Kerr- (anti-) de Sitter black hole) may be used as a particle accelerator to probe the physics of Planck energy scales or higher energies.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：P145.8
本文编号：2338585
[Abstract]:In 2009, M.Ban dos,J.Silk and S.M.West (BSW) proved that Kerr black holes in background spacetime without cosmological constants can be used as particle accelerators under certain conditions. The collision centroid of a particle colliding at its external interface can be divergent. The conditions to be satisfied are as follows: 1) the considered Kerr black hole in flat spacetime is an extreme black hole, 2) one of the colliding particles has critical angular momentum. Our work is to extend this study to Kerr black holes in nonplanar spacetimes with nonzero cosmological constants, that is, to discuss the possibility of Kerr-anti-de Sitter black holes or Kerr-de Sitter black holes as particle accelerators. We find that the cosmological constant, which is not zero at this time, plays an important role in the study of this problem: for a Kerr-anti-de Sitter black hole, if the collision centroid of a particle colliding at its external interface is to diverge, In addition to the above two conditions, black holes and colliding particles with critical angular momentum also need to satisfy certain additional conditions. For a Kerr-de Sitter black hole, only the second condition mentioned above is satisfied, and the collisional centroid energy of particles colliding at the outer viewing interface of the black hole will be divergent. Therefore, the non-extreme Kerr-de Sitter black hole can still act as a particle accelerator, so that the collision centroid of particles colliding at its external interface can reach a positive infinity. So Kerr- (anti-) de Sitter black hole) may be used as a particle accelerator to probe the physics of Planck energy scales or higher energies.
【学位授予单位】：兰州大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：P145.8
【共引文献】
相关博士学位论文 前2条
1 魏少文;W弦场论实现的新进展和黑洞背景下的强引力效应[D];兰州大学;2012年
2 刘长青;弯曲时空中粒子碰撞与加速、强引力透镜效应以及黑洞能量提取[D];湖南师范大学;2013年
，本文编号：2338585
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