论文标题
原始热区的中微子冷却
Neutrino Cooling of Primordial Hot Regions
论文作者
论文摘要
讨论了由热物质填充的可能主要区域中微子冷却的影响。这样的区域可能包含不同起源的原始密度不均匀性，并可以生存到现代时代。我们表明，此类区域的最终温度为$ \ sim 10 \，{\ rm kev} $，前提是初始温度在间隔$ 10 \，{\ rm kev} ... 100 \，{\ rm mev} $之内。由于含有$ n-p $过渡的核反应而实现冷却。下限$ 10 \，{\ rm kev} $是通过抑制阈值效果和$ n $，$ e^{\ pm} $密度减小来解释的。
The effect of neutrino cooling of possible primary regions filled by the hot matter is discussed. Such regions could contain the primordial density inhomogeneities of different origin and survive up to modern epoch. We show that the final temperature of such region is $\sim 10\, {\rm keV}$ provided that the initial temperature is within the interval $10\, {\rm keV} ... 100\, {\rm MeV}$. The cooling is realized due to the nuclear reactions containing $n-p$ transition. The lower limit $10\, {\rm keV}$ is accounted for by suppression of the reactions rates because of threshold effect and $n$, $e^{\pm}$ density diminishment.
