{"paper":{"title":"Gauge-Field-Mediated Symmetry Breaking of Matters Under Electromagnetic Fields and Its Impact on Spin Dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"The gauge-field term in spin-orbit coupling governs symmetry breaking and drives spin dynamics under electromagnetic fields.","cross_cats":["physics.comp-ph"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Angel Rubio, Carsten A. Ullrich, Esmaeil Taghizadeh Sisakht, Kyoung-Whan Kim, Noejung Park, Uiseok Jeong","submitted_at":"2026-05-05T09:12:28Z","abstract_excerpt":"When a condensed-matter system is subjected to external electromagnetic fields, the gauge-invariant formulation of physical operators must explicitly incorporate the gauge-field contribution. However, in the context of spin-orbit coupling (SOC), this gauge-field term is often regarded as negligible or merely additive compared to the canonical SOC, which is typically localized near atomic cores. Here, we demonstrate that the symmetry breaking and consequent spin dynamics are governed by the gauge-field term, without which the spins remain symmetry-constrained. We perform real-time time-dependen"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We demonstrate that the symmetry breaking and consequent spin dynamics are governed by the gauge-field term, without which the spins remain symmetry-constrained.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"That the real-time TDDFT implementation correctly isolates the gauge-field contribution to SOC from numerical artifacts, basis-set effects, and other Hamiltonian terms, and that the observed spin evolution is not an artifact of the chosen time-step or propagation scheme.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Gauge-field term in SOC governs symmetry breaking and spin dynamics under EM fields; without it spins stay symmetry-constrained, per real-time TDDFT on representative symmetries.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"The gauge-field term in spin-orbit coupling governs symmetry breaking and drives spin dynamics under electromagnetic fields.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"eb265bd3c107ac0be447c109c354990b729d5a889cd184cb75a10b55be3bf82c"},"source":{"id":"2605.03539","kind":"arxiv","version":2},"verdict":{"id":"dc036b6e-c06b-4a9a-b7d1-891134a78c1f","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-07T16:03:17.274987Z","strongest_claim":"We demonstrate that the symmetry breaking and consequent spin dynamics are governed by the gauge-field term, without which the spins remain symmetry-constrained.","one_line_summary":"Gauge-field term in SOC governs symmetry breaking and spin dynamics under EM fields; without it spins stay symmetry-constrained, per real-time TDDFT on representative symmetries.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"That the real-time TDDFT implementation correctly isolates the gauge-field contribution to SOC from numerical artifacts, basis-set effects, and other Hamiltonian terms, and that the observed spin evolution is not an artifact of the chosen time-step or propagation scheme.","pith_extraction_headline":"The gauge-field term in spin-orbit coupling governs symmetry breaking and drives spin dynamics under electromagnetic fields."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.03539/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_compliance","ran_at":"2026-05-19T15:16:06.800535Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"b2fdf9d379b99d97e740a9a5da680def5be2e121b2810d8fdeef2555082bbd01"},"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"}