A Six Birds' Eye View of Dark Energy: Closure, Route Mismatch, and Audits for Apparent Acceleration

A Six Birds' Eye View of Dark Energy: Closure, Route Mismatch, and Audits for Apparent Acceleration | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A Six Birds' Eye View of Dark Energy: Closure, Route Mismatch, and Audits for Apparent Acceleration Ioannis Tsiokos This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8839924/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Empirical cosmology infers late-time acceleration by fitting homogeneous FLRW models to data products that are coarse-grained summaries of an inhomogeneous universe. This makes it hard to distinguish a fundamental component from a closure correction induced by coarse-graining. We apply Six Birds Theory (SBT) to treat cosmological modeling as a closure package with a lens (what is retained), a completion (how discarded structure is filled in), and audits (tests of dynamical coherence under evolution). We implement a minimal computational API for lenses, completions, packaging operators, idempotence defects, and route mismatch, together with provenance-tracked run bundles and posterior-predictive cross-probe audits. In calibrated toy systems, route mismatch is consistent with zero in a linear control regime and becomes strictly positive when nonlinearity is introduced. In a patch-expansion proxy, homogeneous control yields Q(t) approximately 0, whereas heterogeneous initial conditions produce a positive acceleration proxy (Q_peak approximately 1.74) and domain acceleration greater than 0 for about 99% of late-time samples. Using synthetic distance–redshift data from a null-Lambda heterogeneous generator, homogeneous LambdaCDM fitting recovers Omega_Lambda about 0.60. A heterogeneity-proxy rewrite term matches LambdaCDM fit quality and improves held-out prediction of a heterogeneity proxy by about 100x in RMSE. We also demonstrate the same provenance and audit pipeline on public DES SN 5-year and DES Y6 BAO releases. Astrophysics and Cosmology Theoretical Astrophysics Computational Physics dark energy coarse-graining cosmological backreaction closure posterior predictive checks data compression six birds cosmology Full Text Additional Declarations The authors declare potential competing interests as follows: I. Tsiokos is affiliated with Automorph Inc. No external funding was received for this research, and Automorph Inc. had no role in the study design, data collection, analysis, interpretation, or decision to submit. The author has no other financial or non-financial competing interests to declare. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-8839924","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":588897968,"identity":"503fcc0a-a7e4-477f-b21c-7a5eb433e9a4","order_by":0,"name":"Ioannis Tsiokos","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABB0lEQVRIiWNgGAWjYBACNjBpACIYGxgbGBjkQMwDD4jRwgPVYgzWkkCMdTxgexgYEhtAPHxa+Nibnz0uKKhjsOc/3PhwRkVd+vywww+BttjJ6TbgcBjPMXPjGQaHGXgkEpsNN5w5nLvxdpoBUEuysdkBHFokEsykeQwOALUwtkk+bDuQu3F2AkjLgcRtOLWkfwNqqWPg4T8I0lKXbjg7/QMBLTkgW5iB3k9sk9zYxpwgL51DwBaeM2VALYd5eG4A/TLjzGHDDdI5BQcSDHD7Rb69fZs0z586Ofb+4w8f9lTUycvPTt/84UOFnRwuLTDAA2cZgFUa4FeOZm8DKapHwSgYBaNgJAAA0GpZsogCS5QAAAAASUVORK5CYII=","orcid":"https://orcid.org/0009-0009-7659-5964","institution":"","correspondingAuthor":true,"prefix":"","firstName":"Ioannis","middleName":"","lastName":"Tsiokos","suffix":""}],"badges":[],"createdAt":"2026-02-10 11:14:32","currentVersionCode":1,"declarations":{"humanSubjects":false,"vertebrateSubjects":false,"conflictsOfInterestStatement":true,"humanSubjectEthicalGuidelines":false,"humanSubjectConsent":false,"humanSubjectClinicalTrial":false,"humanSubjectCaseReport":false,"vertebrateSubjectEthicalGuidelines":false},"doi":"10.21203/rs.3.rs-8839924/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-8839924/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":102398435,"identity":"53aed2ab-f622-4d7c-b1ba-51dbdb452a53","added_by":"auto","created_at":"2026-02-11 10:22:41","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":537564,"visible":true,"origin":"","legend":"","description":"","filename":"2026TsiokosASixBirdsEyeViewofDarkEnergyv1.pdf","url":"https://assets-eu.researchsquare.com/files/rs-8839924/v1_covered_9375caf0-2542-47bf-94b5-d57020f36d17.pdf"}],"financialInterests":"The authors declare potential competing interests as follows: I. 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This makes it hard to distinguish a fundamental component from a closure correction induced by coarse-graining. We apply Six Birds Theory (SBT) to treat cosmological modeling as a closure package with a lens (what is retained), a completion (how discarded structure is filled in), and audits (tests of dynamical coherence under evolution). We implement a minimal computational API for lenses, completions, packaging operators, idempotence defects, and route mismatch, together with provenance-tracked run bundles and posterior-predictive cross-probe audits.\u003c/p\u003e\n\u003cp\u003eIn calibrated toy systems, route mismatch is consistent with zero in a linear control regime and becomes strictly positive when nonlinearity is introduced. 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