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arXiv 1405.5337hep-phastro-ph.COastro-ph.HEnucl-thphysics.atom-ph
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拓扑缺陷暗物质的非引力信号探测

Searches for topological defect dark matter via non-gravitational signatures

Y. V. Stadnik, V. V. Flambaum

备注：
6 pages. New material and references added
发表信息：
Physical Review Letters 113, 151301 (2014)
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摘要：

我们提出了通过非引力信号探测拓扑缺陷暗物质的方案。弥补缺陷的暗物质场可能与包括夸克和光子在内的标准模型粒子相互作用，导致它们的质量发生变化。当拓扑缺陷穿过脉冲星时，其质量、半径和内部结构可能发生改变，从而导致脉冲星“地震”。拓扑缺陷也可以作为一种宇宙电介质材料，具有独特的频率依赖折射率，这将导致周期性地外光或无线电信号的时间延迟，以及光或无线电源以与引力透镜不同的方式分散。通过地球的拓扑缺陷可能会引起电子，质子，中子，原子核和原子的临时非零电偶极矩。与最近提出的地面探测方法相比，这种天体物理观测的最大优点是，与穿过地球本身的缺陷相比，在巨大的太空中发现缺陷的可能性要高得多。

英文摘要：

We propose schemes for the detection of topological defect dark matter using pulsars and other luminous extraterrestrial systems via non-gravitational signatures. The dark matter field, which makes up a defect, may interact with standard model particles, including quarks and the photon, resulting in the alteration of their masses. When a topological defect passes through a pulsar, its mass, radius and internal structure may be altered, resulting in a pulsar `quake'. A topological defect may also function as a cosmic dielectric material with a distinctive frequency-dependent index of refraction, which would give rise to the time delay of a periodic extraterrestrial light or radio signal, and the dispersion of a light or radio source in a manner distinct to a gravitational lens. A topological defect passing through Earth may give rise to temporary non-zero electric dipole moments for an electron, proton, neutron, nuclei and atoms. The biggest advantage of such astrophysical observations over recently proposed terrestrial detection methods is the much higher probability of a defect been found in the vast volumes of outer space compared with one passing through Earth itself.

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