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arXiv 2006.07055gr-qc
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不等延迟干涉仪探测暗物质

Searching for dark matter with an unequal delay interferometer

Etienne Savalle, Aurelien Hees, Florian Frank, Etienne Cantin, Paul-Eric Pottie, Benjamin M. Roberts, Lucie Cros, Ben T. McAllister, Peter Wolf

摘要:

我们提出了一种新型的实验,比较时钟的频率(在这种情况下,一个超稳定的光学腔)在时间$t$自己的频率$t-T$前一段时间,通过“存储”的输出信号(光子)在光纤延迟线。在超轻振荡暗物质(DM)模型中,这样的实验对DM与标准模型场的耦合敏感,通过腔和光纤长度以及光纤折射率的振荡。此外,灵敏度在腔的机械共振周围显著增强。我们目前的实验结果,这样的实验和报告没有证据DM的质量在[ $4.1\times 10^{-11}$,$8.3\times 10^{-10}$ ]~eV的区域。此外,我们改进的约束所涉及的耦合常数,在一个标准的银河系DM模型的一个数量级,在相应的质量谐振频率的腔。此外,在模型的弛豫DM,我们改善现有的限制在整个DM质量范围内约一个数量级,并高达6个数量级的共振。

英文摘要:

We propose a new type of experiment that compares the frequency of a clock (an ultra-stable optical cavity in this case) at time $t$ to its own frequency some time $t-T$ earlier, by "storing" the output signal (photons) in a fibre delay line. In ultra-light oscillating dark matter (DM) models, such an experiment is sensitive to coupling of DM to the standard model fields, through oscillations of the cavity and fibre lengths and of the fibre refractive index. Additionally, the sensitivity is significantly enhanced around the mechanical resonances of the cavity. We present experimental result of such an experiment and report no evidence of DM for masses in the [$4.1\times 10^{-11}$, $8.3\times 10^{-10}$]~eV region. In addition, we improve constraints on the involved coupling constants by one order of magnitude in a standard galactic DM model, at the mass corresponding to the resonant frequency of our cavity. Furthermore, in the model of relaxion DM, we improve on existing constraints over the whole DM mass range by about one order of magnitude, and up to six orders of magnitude at resonance.

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