论文标题
弦理论中的超重黑物质
Superheavy Dark Matter from String Theory
论文作者
论文摘要
众所周知，可以实现通货膨胀和低能超对称性的显式弦模型很难实现。鉴于隔离需要非常具体的构型，因此通常预计超对称颗粒非常沉重，暗示中性粒子在标准的热历史中应过量生产中性粒子。但是，在本文中，我们指出，这种情况并非如此，因为由弦模量驱动的早期物质统治可以将暗物质丰度稀释至观察到的值。我们认为，弦乐紧凑型的通用特征，即高超对称性刻度和模量统治的较晚时代，可能意味着超重的中性米属暗物质，质量约为$ 10^{10} -10} -10} -10^{11}} $ gev。有趣的是，这是解释最近通过暗物质衰减来解释最近发现超高能中微子的范围。
Explicit string models which can realize inflation and low-energy supersymmetry are notoriously difficult to achieve. Given that sequestering requires very specific configurations, supersymmetric particles are in general expected to be very heavy implying that the neutralino dark matter should be overproduced in a standard thermal history. However, in this paper we point out that this is generically not the case since early matter domination driven by string moduli can dilute the dark matter abundance down to the observed value. We argue that generic features of string compactifications, namely a high supersymmetry breaking scale and late time epochs of modulus domination, might imply superheavy neutralino dark matter with mass around $10^{10}-10^{11}$ GeV. Interestingly, this is the right range to explain the recent detection of ultra-high-energy neutrinos by IceCube and ANITA via dark matter decay.
