论文标题
原始热区的中微子冷却效果取决于其尺寸
Neutrino cooling effect of primordial hot areas in dependence on its size
论文作者
论文摘要
我们考虑宇宙中假设原始热区的温度动态。这样的区域可以由原始密度不均匀性产生，并且可以生存到现代时代，尤其是由于原始黑洞（PBH）大小$ r \ gtrsim 1 $ PC等的群集等。在这里，我们专注于中微子冷却效果，这是由于弱$ p \ leftrightarrow n $ transitions和$ e^{\ pm} $ nihihitation的反应而实现的。发现给定的中微子冷却机制可在广泛的参数中起作用。对于考虑了PBH群集的典型参数，冷却机制对于温度$ t \ gtrsim 3 $ MEV非常有价值。
We consider the temperature dynamics of hypothetical primordial hot areas in the Universe. Such areas can be produced by the primordial density inhomogeneities and can survive to the modern era, in particular due to primordial black hole (PBH) cluster of size $R \gtrsim 1$ pc and more. Here we concentrate on the neutrino cooling effect which is realized due to reactions of weak $p\leftrightarrow n$ transitions and $e^{\pm}$ annihilation. The given neutrino cooling mechanism is found to work in a wide range of parameters. For those parameters typical for PBH cluster considered, the cooling mechanism is quite valuable for the temperatures $T \gtrsim 3$ MeV.
