Coherence Noise Across Scales: Linking Quantum Circuit Decoherence to Cosmological Dark Energy Through a Com- mon Noise Parameter
Arturo Cerezo Β· Zenodo (CERN European Organization for Nuclear Research) Β· 2026
Radial Coherential Dynamics (RCD) posits a scalar coherence field π whose deco- herence drives phenomena from quantum circuit noise to cosmological dark energy. Two mature but disconnected modules exist: (i) a cross-platform analysis of GHZ state fidelity under dephasing-dominated noise, where a Lindblad model with local and col- lective dephasing channels produces a crossover at πβ β πΎlocal/πΎπ; and (ii) a cosmo- logical effective field theory in which a CaldeiraβLeggett bath stabilizes a hilltop dark energy potential, with effective coefficients derived from an Ohmic spectral density parametrized by (π, π, ΞUV). Here we construct a minimal phenomenological bridge between these modules by introducing a single dimensionless parameter π β‘ πΎπ/πΎlocal β the fraction of collective-to-local noise β and proposing, as an explicit ansatz, that π is approximately scale-invariant. Under this ansatz, the laboratory measurement πβ β 15β20 on IonQ Forte fixes π β [0.05, 0.07], which constrains the cosmological bath coupling ππ to a narrow window. Conversely, the cosmological requirement of controlled backreaction imposes an upper bound π 1/πmax testable in future multi-qubit experiments. For the benchmark param- eters of the HDE series, the three conditions (stabilization, backreaction, and QC data) overlap in the narrow window π β [0.05, 0.07], yielding a dark energy equation of state π€0 β β0.987, consistent with current DESI constraints. The bridge is explic- itly falsifiable: non-overlapping π windows from QC and cosmology would refute the universal noise ansatz independently of the validity of either module.