Table 1 Constraint on ΓS and κ using experimental data from the Holometer and QUEST experiments for different correlation classes
From: Signatures of correlation of spacetime fluctuations in laser interferometers
Correlation class | Experiment | Prior bounds | ||
|---|---|---|---|---|
Holometer | QUEST | |||
(a) Factorised ρF | ΓS ⩽ 1.628 × 10−34 | ΓS ⩽ 5.154 × 10−33 | None | |
(b) Inverse ρIm | (b1) Spatial separation m = S | ΓSκ ⩽ 6.075 × 10−35 or \(\alpha \equiv \frac{2{\Gamma }_{{{{\rm{S}}}}}\kappa {{{\mathcal{L}}}}}{3\sqrt{2\pi }{\ell }_{{{{\rm{P}}}}}}\leqslant 40\) | ΓSκ ⩽ 7.022 × 10−33 or α ⩽ 208 | α ⩽ 0.616 |
(b2) Spacetime separation m = ST | ΓSκ ⩽ 2.264 × 10−35 | ΓSκ ⩽ 3.537 × 10−33 | None | |
(c) Exponential ρEm | (c1) Spatial separation m = S | ΓSκ2 ⩽ 1.25 × 10−35 | ΓSκ2 ⩽ 6.173 × 10−32 | None |
(c2) Spacetime separation m = ST | ΓSκ2 ⩽ 2.812 × 10−36 | ΓSκ2 ⩽ 1.234 × 10−32 | None | |
