{"paper":{"title":"The Impossible Triangle: A No-Go for Symmetry-Protected Scalar Portals in Interacting Dark Energy","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Mohid Farhan","submitted_at":"2026-07-12T17:46:05Z","abstract_excerpt":"The $S_8$ tension motivates interacting dark energy (IDE), but embedding IDE in UV-complete physics faces severe naturalness challenges. We analyze four symmetry-protected DM--DE portals ( quartic ($\\tfrac{1}{2}\\lambda\\phi^2\\chi^2$), trilinear ($g\\phi\\chi^2$), derivative ($(c_6/\\Lambda^2)(\\partial_\\mu\\phi)^2\\chi^2$), and fermionic Yukawa ($y\\phi\\bar{\\psi}\\psi$) )within a $Z_2$-symmetric Inert Doublet + Singlet Model. The trilinear portal requires $\\beta \\sim 0.45$ ($g \\sim 10^{-16}\\,\\mathrm{GeV}$), overshooting the radiative bound $g \\lesssim 10^{-42}\\,\\mathrm{GeV}$ by $\\sim 26$ orders (tuning"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.10859","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/2607.10859/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"}