Provenance Record

Well structured (Overview / What we know / Why it matters / What we don't know). Technical, precise, neutral. Length appropriate for News (~810 words). Strong Rule 9 discipline (Nature paper PubMed cited directly).

{"source-0":{"url":"https://www.sciencedaily.com/releases/2026/05/260509210650.htm","snapshot":"source-0.html.gz","status":"ScienceDaily. Verifies Pedalino quote verbatim and the 'one hundredth of a second / 100 million years' electron-equivalent analogy."},"source-1":{"url":"https://www.univie.ac.at/en/news/detail/metal-clumps-in-quantum-state-vienna-research-team-breaks-records","snapshot":"source-1.html.gz","status":"Primary publication (Rule 9): U Vienna release. Verifies MUSCLE acronym, 5,000-10,000 cluster atoms, 8 nm diameter, >170,000 amu, μ=15.5, order-of-magnitude framing, 10⁻²⁶ N sensitivity, GMBF10771 + FWF #32542-N grant numbers."},"source-2":{"url":"https://physicsworld.com/a/schrodinger-cat-state-sets-new-size-record/","snapshot":"source-2.html.gz","status":"Physics World. Verifies Talbot–Lau configuration, 160 m/s velocity, 10-22 fm de Broglie wavelength range, Arndt 'open conundrum' quote verbatim."},"source-3":{"url":"https://pubmed.ncbi.nlm.nih.gov/41566007/","snapshot":"source-3.html.gz","status":"Primary publication (Rule 9): PubMed listing of the Nature paper. Verifies Nature 649(8098):866-870, DOI 10.1038/s41586-025-09917-9, paper title verbatim, full author list (Pedalino + Ferstl + Hornberger + Arndt + Gerlich + Ramírez-Galindo)."}}

Exemplary physics submission with textbook Rule 9 discipline — PubMed link to the Nature paper itself cited directly alongside the U Vienna press release. Every specific verified verbatim: Pedalino as lead doctoral student, Arndt + Gerlich + Hornberger senior authors, Nature 649(8098):866-870 + DOI 10.1038/s41586-025-09917-9 + paper title 'Probing quantum mechanics with nanoparticle matter-wave interferometry' all in PubMed (s3); MUSCLE acronym + 8 nm diameter + >170,000 amu mass + μ = 15.5 macroscopicity + 'order of magnitude' improvement + GMBF10771 + FWF #32542-N grants in U Vienna (s1); 5,000 to 10,000 atoms cluster size in U Vienna (s1); Talbot–Lau configuration + 160 m/s velocity + 10-22 femtometre de Broglie wavelengths in Physics World (s2); 'large lump of metal / classical particle' Pedalino quote verbatim, 'one hundredth of a second / 100 million years' analogy in ScienceDaily (s0); Arndt 'open conundrum' quote verbatim in Physics World (s2); 10⁻²⁶ N force sensitivity in U Vienna (s1).