The Vacuum-Granule Waves: A Test-First Synthesis of AI-Analyzed Results (A10)

Three precision instruments, built for unrelated purposes, register a faint and so far unexplained signal. (i) The LIGO gravitational-wave detectors carry eighteen unidentified spectral lines that appear at the same frequency in both detectors three thousand kilometers apart. (ii) An independent re-analysis of a 912-day silicon spin-qubit record shows a 1/f noise spectrum with no measurable low-frequency floor across nearly four decades. (iii) The NASA radio experiment ARCADE 2 reports an unexplained low-frequency sky-brightness excess. Converted through one standard relation (a frequency times Planck’s constant, divided by a characteristic speed), the LIGO and qubit channels return the same inferred mass near 10−49 kg; ARCADE lies on the lighter end of the same continuous spectrum spanning 10−50 to 10−43 kg. The proposed interpretation is that the common low-frequency hum is the projection, onto each system, of the Compton waves of low-mass quantum-vacuum excitations (granules). This places the framework in the company of, but distinct from, ultralight-boson models in the dark sector literature, which reach to even lower masses and wavelengths approaching the size of the observable universe. Two parameter-free relations produced by independent AI analysis, each built only from known constants of nature, anchor the geometry of the proposal. The Temperature Borderline Rth = (4π/3) ℏc/(kBT) fixes the size at which a body of temperature T sits on the classical-to-quantum crossover. The Single-Vortex Compton Lock fixes a droplet size at which a quantized superfluid vortex forces three independent characteristic lengths to coincide. Both contain no adjustable numbers; both land on regimes that current experiments already probe. All inputs are public and independently reproducible. The framework is the author’s; the AI systems analyzed and cross-checked it. Note added after posting. A first-pass cross-detector coherence analysis of the eighteen LIGO lines was carried out on public O3 strain data, including a zero-delay test and a full inter-site delay scan covering every arrival direction. It did not find the lines to be mutually coherent above the broadband common-mode between the detectors. This is reported here in the interest of full disclosure, but it does not weaken the granule reading, for a reason worth stating plainly: coherence is not a requirement of the hypothesis. A continuous, overlapping background of many low-mass Compton waves, longer than the inter-site baseline and arriving from all directions, need not be coherent across the detectors at all. Nature may simply be incoherent here, and we do not seek coherence at any cost. It was tested because it is one possible property. Despite the lack of it, the lines remain coincident in frequency and unidentified, and they continue to fall within the granule mass range already implied by the framework's original estimate and overlapping with other measurements. A range that only extends lower as lower-frequency measurements are added. Full repository of A series: https://zenodo.org/records/18888582