论文标题
原始黑孔作为暗物质
Primordial Black Holes as Dark Matter
论文作者
论文摘要
我们调查了模型，在这种模型中，辐射温度的一系列黑孔在辐射时代的辐射温度主导的时代可以存活足够长的时间，可以在我们宇宙的物质和辐射之间观察到的交叉处产生一个占主导地位的ERA。我们发现，这种黑洞的足够密集的人口确实可以这样做。较强的观察性约束，即黑洞的生命至少只要宇宙的当前年龄就更难评估，这是因为在这个问题上以黑洞合并为主导的时代。然后，我们研究所需的密度和质量是否与通货膨胀的全息时空（HST）模型一致。我们发现它们是，但是对慢速参数$ε= - \ frac {\ dot {h}} {h^2} $在该模型中的限制很小。结合不比模型对张量波动的预测的观察性结合强。在重新温度下，所需的黑洞密度在具有单个黑洞的模型中必须被视为量子机械事故。在这样的模型中，我们的宇宙由于概率量子的波动较低而存在。
We investigate models in which a spectrum of black holes with Hawking temperature of order the radiation temperature at the beginning of the radiation dominated era can survive long enough to produce a matter dominated era at the observed crossover between matter and radiation in our universe. We find that a sufficiently dense population of such black holes can indeed do so. The stronger observational constraint, that the black holes have lifetimes at least as long as the current age of the universe is harder to assess, because of black hole mergers during the matter dominated era. We then investigate whether the required densities and masses are consistent with the Holographic Space-time (HST) model of inflation. We find that they are, but put mild constraints on the slow roll parameter $ε= - \frac{\dot{H}}{H^2}$ in that model to be small. The bound is no stronger than the observational bound on the model's prediction for tensor fluctuations. The required black hole density, at the reheat temperature, in a model with a single species of black hole, must be viewed as a quantum mechanical accident. In such a model, our universe exists because of a low probability quantum fluctuation.
