Kapitza-Dirac Scattering and Its Role in Cosmological Redshift | 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PDF Short Report Kapitza-Dirac Scattering and Its Role in Cosmological Redshift Louis Marmet This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8486324/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 10 You are reading this latest preprint version Abstract A detailed examination of Kapitza--Dirac scattering shows that under the conditions of intergalactic space, the quantized photon--electron interaction produces an optical effect that is observed as a spectral redshift. The interaction transfers photons between light-waves, reducing photon energy with a Doppler-recoil of electrons. Each transfer is a result of stimulated emission, a process that changes the direction of the photons but preserves the wavefronts of all light waves, a necessary condition to avoid blurring of images. These properties make the Stimulated Transfer redshift (STz) distinct from all other redshift mechanisms proposed so far. This report presents an overview of additional properties resulting from Kapitza--Dirac scattering, discusses their implications for testable predictions that differ from those made by \((\Lambda)\) CDM, and outlines the prospects for future studies. redshift stimulated electron expansion Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 02 Apr, 2026 Reviews received at journal 30 Mar, 2026 Reviews received at journal 02 Mar, 2026 Reviewers agreed at journal 02 Mar, 2026 Reviewers agreed at journal 18 Feb, 2026 Reviewers invited by journal 29 Jan, 2026 Editor invited by journal 26 Jan, 2026 Editor assigned by journal 22 Jan, 2026 Submission checks completed at journal 21 Jan, 2026 First submitted to journal 21 Jan, 2026 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. 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