论文标题
间距类相干旋转波动的干涉限制
Interferometric Constraints on Spacelike Coherent Rotational Fluctuations
论文作者
论文摘要
据报道，在一对39 m长的高功率迈克尔逊干涉仪的旋转诱导的差分位置位移的跨光谱据报道。每个干涉仪的一个臂是在其中点附近弯曲$ 90^{\ Circ} $，以获得对符合仪器平面正常轴的旋转的敏感性。该仪器在宽频带中实现了空间相关信号的量子限制感应，该信号延伸到超过3.9 MHz的逆光行进时间。对于带宽$ΔF> 10 \; \ mathrm {kHz} $的固定信号，对旋转诱导的经典或外来形式起源$ h $ h $的敏感性超过$ \ mathrm {csd} _ {Δh} _ {δH} 10^{ - 44} \; \ Mathrm {S} $是Planck时间。该测量用于限制时空自由度的非局部相干旋转旋转程度的半经典模型，这些自由度已猜测是在全息量子几何形状中出现的，但在经典度量中不存在。
Precision measurements are reported of the cross-spectrum of rotationally-induced differential position displacements in a pair of colocated 39 m long, high power Michelson interferometers. One arm of each interferometer is bent $90^{\circ}$ near its midpoint to obtain sensitivity to rotations about an axis normal to the plane of the instrument. The instrument achieves quantum-limited sensing of spatially-correlated signals in a broad frequency band extending beyond the 3.9 MHz inverse light travel time of the apparatus. For stationary signals with bandwidth $Δf > 10\;\mathrm{kHz}$, the sensitivity to rotation-induced strain $h$ of classical or exotic origin surpasses $\mathrm{CSD}_{δh} < t_P / 2$, where $t_P = 5.39 \times 10^{-44}\;\mathrm{s}$ is the Planck time. This measurement is used to constrain a semiclassical model of nonlocally coherent rotational degrees of freedom of spacetime, which have been conjectured to emerge in holographic quantum geometry but are not present in a classical metric.
