论文标题
用不等的延迟干涉仪搜索暗物质
Searching for dark matter with an unequal delay interferometer
论文作者
论文摘要
我们提出了一种新型的实验，该实验将时间$ t $在其自身频率的某个时间$ t-t $更早的时间$ t $上比较时钟的频率（在这种情况下），通过在光纤延迟线中“存储”输出信号（光子）。在超光振荡的暗物质（DM）模型中，这种实验通过腔和纤维长度以及纤维折射率的振荡对DM与标准模型场的耦合敏感。另外，腔周围的机械共振量显着提高了灵敏度。我们提出了这样的实验结果，并没有报告[$ 4.1 \ times 10^{ - 11} $，$ 8.3 \ times 10^{ - 10} $] 〜ev ev ev ev ev region的质量的证据。此外，在标准的银河系模型中，我们在与我们腔的谐振频率相对应的标准银河DM模型中，通过一个数量级来改善对涉及耦合常数的约束。此外，在放松DM的模型中，我们在整个DM质量范围内的现有限制提高了大约一个数量级，并且在共振时最多可提高六个数量级。
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.
