残余涡旋子的不可约宇宙产物
Irreducible cosmic production of relic vortons
摘要：
在我们的宇宙中存在着一个由载流宇宙弦组成的标度网络，预计在宇宙膨胀期间会不断地产生具有守恒电流的环。这些环辐射引力波，并可能稳定成离心支撑的结构。我们表明，这一过程产生了一个不可约的人口的vortons尚未考虑到目前为止。特别是，即使在弦形成的时候没有形成环，我们也期望今天大量存在的涡旋子。我们确定了它们的宇宙学分布，并估计了它们今天作为弦张力和当前能量尺度的函数的遗迹丰度。这允许我们排除这个参数空间的新域。与此同时，在弦电流的某些条件下，涡子被证明是一个可行的和原始的暗物质候选者，可能为所有值的弦张力。它们的质量、自旋和电荷谱很宽，在暗物质的研究中，它们会有一种不寻常的现象。
英文摘要：
The existence of a scaling network of current-carrying cosmic strings in our Universe is expected to continuously create loops endowed with a conserved current during the cosmological expansion. These loops radiate gravitational waves and may stabilise into centrifugally supported configurations. We show that this process generates an irreducible population of vortons which has not been considered so far. In particular, we expect vortons to be massively present today even if no loops are created at the time of string formation. We determine their cosmological distribution, and estimate their relic abundance today as a function of both the string tension and the current energy scale. This allows us to rule out new domains of this parameter space. At the same time, given some conditions on the string current, vortons are shown to provide a viable and original dark matter candidate, possibly for all values of the string tension. Their mass, spin and charge spectrum being broad, vortons would have an unusual phenomenology in dark matter searches.
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