{"paper":{"title":"Damped Harmonic Oscillator Dark Energy and the Hubble Tension","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Qiang Wu, Saddam Hussain, Simran Arora, Tao Zhu","submitted_at":"2026-06-16T05:54:43Z","abstract_excerpt":"We investigate a dark-energy equation of state governed by a damped harmonic oscillator equation, admitting underdamped, critically damped, and overdamped solutions. Confronting the model against Planck CMB, DESI BAO, BBN, Cosmic Chronometers, and three Type~Ia supernova compilations, we find that the underdamped solution yields $H_0 = 70.9 \\pm 1.1$ km/s/Mpc, with DESY5 and $H_0 = 72.0^{+1.4}_{-2.1}$ km/s/Mpc with Union3, reducing the tension with SH0ES to $\\sim\\!1.4\\sigma$, while Pantheon+ strongly favors a near-critically damped solution with positive $w_0$ and $H_0 = 66.23 \\pm 0.85$ km/s/Mp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17550","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.17550/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}