Extremal rotating black holes can be formed in the Planck energy scattering of Dirac spin parallel neutrinos in the mass state $m_2$ (assuming $m_1=0$), owing to the repulsive interaction between their magnetic dipoles, induced by vacuum fluctuations. Assuming that some recent results of loop-quantised Schwarzschild black holes would be also applicable for the Kerr case, we show that the resulting black hole has Planck mass and angular momentum ħ, and that its horizon area is in the spectrum of the Loop Quantum Gravity area operator. Moreover, we argue that such black holes could be produced at the reheating, with an abundance that allows their interpretation as forming the presently observed dark matter component, provided that the energy scale at inflation is $\approx {10}^{17}$ GeV. This scale can be lower if we attribute a high chemical potential to primordial neutrinos. As extremal black holes have zero surface gravity, there is no limits on their abundance from Hawking evaporation.

质量态狄拉克自旋平行中微子普朗克能量散射可形成极值旋转黑洞 ${米}_2$ （假设 ${米}_1=0$)，这是由于真空波动引起的磁偶极子之间的排斥相互作用。假设最近循环量子化史瓦西黑洞的一些结果也适用于克尔情况，我们表明由此产生的黑洞具有普朗克质量和角动量ħ，并且它的视界区域在循环量子引力的光谱中区域运营商。此外，我们认为这种黑洞可以在重新加热时产生，其丰度允许将它们解释为形成目前观察到的暗物质成分，前提是暴胀时的能量标度为$\approx {10}^{17}$伏特。如果我们将高化学势归因于原始中微子，则该比例可能会更低。由于极端黑洞的表面重力为零，因此霍金蒸发对它们的丰度没有限制。