We show that averaging matter dynamics over stochastic gravitational fluctuations gives rise to a complex velocity field \(η_μ = π_μ - i u_μ\) living as a section of the pullback bundle \(E = π_{2}^{*}(T^{*}M)\to \mathcal{C}\times M\). We prove that \(η_μ\) is isomorphic, via the Schrödinger representation, to the symmetric logarithmic derivative (SLD) operator \(L_μ\) on the Hilbert space \(\mathcal{H}_{x} = L^{2}(\mathcal{C})\), up to a trace-zero projection. This isomorphism \(\widetilde{\mathcal{T}}:Γ(E / \sim)\to Γ(\mathcal{L})\) is a bundle isomorphism preserving the flat \(U(1)\) connection (proved in \cite{meza2026topological}) and the quantum Fisher metric. The quantum Fisher information metric \(g_{μν}^{\mathrm{FS}}\) is expressed directly in terms of \(η_μ\) as \(g_{μν}^{\mathrm{FS}} = - \frac{4m^{2}}{\hbar^{2}}\mathrm{Re}\langle (η_μ - \langle η_μ\rangle)(η_ν - \langle η_ν\rangle)\rangle_{\mathcal{P}}\). The holonomy of \(η_μ\) is quantized, leading to topological phases observable in atom interferometry.

翻译：我们证明，在随机引力涨落下对物质动力学进行平均，会产生一个复速度场 \(η_μ = π_μ - i u_μ\)，该场作为拉回丛 \(E = π_{2}^{*}(T^{*}M)\to \mathcal{C}\times M\) 的一个截面存在。我们通过薛定谔表示证明，\(η_μ\) 与希尔伯特空间 \(\mathcal{H}_{x} = L^{2}(\mathcal{C})\) 上的对称对数导数（SLD）算子 \(L_μ\) 在相差一个迹零投影的意义下同构。该同构 \(\widetilde{\mathcal{T}}:Γ(E / \sim)\to Γ(\mathcal{L})\) 是一个保持平坦 \(U(1)\) 联络（已在 \cite{meza2026topological} 中证明）和量子Fisher度量的丛同构。量子Fisher信息度量 \(g_{μν}^{\mathrm{FS}}\) 直接用 \(η_μ\) 表示为 \(g_{μν}^{\mathrm{FS}} = - \frac{4m^{2}}{\hbar^{2}}\mathrm{Re}\langle (η_μ - \langle η_μ\rangle)(η_ν - \langle η_ν\rangle)\rangle_{\mathcal{P}}\)。\(η_μ\) 的和乐是量子化的，这导致了可在原子干涉测量中观测到的拓扑相位。