arXiv 1902.112462019-02-28astro-ph.COgr-qc

利用高能天体物理探测量子引力

Probing quantum gravity using high-energy astrophysics

Justine Tarrant, Geoff Beck, Sergio Colafrancesco

备注：: 6 pages, 1 figure. Accepted for proceedings of High Energy Astrophysics in Southern Africa 2018

摘要：

LIGO观测到的事件表明存在大量中等质量的黑洞。这个意想不到的结果导致了对原始黑洞形成理论的兴趣的复苏，几项研究表明，广泛的质量分布可以逃避或满足对单色种群的严格限制。如果存在如此庞大的群体，它们将为超越物理学标准模型的理论提供完美的测试平台，这些理论将改变黑洞的演化。我们研究的情况是，“普朗克星”，一个假设的修改黑洞的演变，它爆炸通过量子环引力激发隧道。我们确定什么样的高频背景信号的物体爆炸在整个宇宙历史上会看起来像各种黑洞人口放置实际的经验约束量子圈引力通过比较观察到的各向同性的背景信号在相同的频率。我们发现，严格的约束严重限制了通过高能量通道释放的能量，从而对高能量信号是否会导致文献中推测的伽马射线暴产生怀疑。

英文摘要：

The events observed by LIGO indicate the existence of a large population of intermediate mass black holes. This unexpected result lead to a resurgence in the interest in theories of the formation of primordial black holes with several studies showing that broad mass distributions can evade or satisfy the stringent constraints on monochromatic populations. If such large populations exist they provide the perfect test-bed for theories beyond the standard model of physics that modify black hole evolution. The case we studied is that of "Planck stars", a hypothetical modification of the black hole evolution where it explodes via quantum loop gravity motivated tunnelling. We determine what the high-frequency background signal of such objects exploding over the whole of cosmic history would look like for various black hole populations to place actual empirical constraints on quantum loop gravity via comparison to observed isotropic background signals at the same frequencies. We find that stringent constraints heavily restrict the amount of energy released via the high-energy channel, thereby casting doubt on whether or not the high-energy signal could result in gamma-ray bursts as speculated in the literature.

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