标题： 中性微子遗迹气体的热足迹 显示英文标题

标题： On the thermal footsteps of Neutralino relic gases

摘要： 当前文献表明，中性微子是主导的冷暗物质粒子种类。 假设熵的微正则定义，我们研究了“冻结”时期到现在的每粒子局部熵。 通过将此熵与以动力晕变量表示的实际星系结构的每粒子熵进行比较，出现了一个“熵一致性”准则。 我们将这一准则应用于中性微子主要是b-微子和主要是希格斯微子的情况，并结合通常的“丰度”准则，要求现在的中性微子残留密度符合$0.1 < \Omega_{\chic{\tilde\chi^0_1}} < 0.3$对$h\simeq 0.65$的要求。 两个准则的联合应用显示，b-微子通道的拟合效果更好，因此后者似乎比希格斯微子通道更受青睐。 所建议的方法可以用于测试中性微子的其他湮灭通道，以及其他热气体遗迹的粒子候选者。 显示英文摘要

摘要： Current literature suggests that neutralinos are the dominant cold dark matter particle species. Assuming the microcanonical definition of entropy, we examine the local entropy per particle produced between the ``freeze out'' era to the present. An ``entropy consistency'' criterion emerges by comparing this entropy with the entropy per particle of actual galactic structures given in terms of dynamical halo variables. We apply this criterion to the cases when neutralinos are mosly b-inos and mostly higgsinos, in conjunction with the usual ``abundance'' criterion requiring that present neutralino relic density complies with $0.1 < \Omega_{\chic{\tilde\chi^0_1}} < 0.3$ for $h\simeq 0.65$. The joint application of both criteria reveals that a better fitting occurs for the b-ino channels, hence the latter seem to be favoured over the higgsino channels. The suggested methodology can be applied to test other annihilation channels of the neutralino, as well as other particle candidates of thermal gases relics.