{"paper":{"title":"Expectation values after an integrable boundary quantum quench","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Form factors of bulk and boundary-changing operators determine the real-time evolution after an integrable boundary quench.","cross_cats":["cond-mat.stat-mech"],"primary_cat":"hep-th","authors_text":"D\\'avid F\\\"ulepi, M\\'at\\'e Lencs\\'es, Zolt\\'an Bajnok","submitted_at":"2026-05-06T12:14:11Z","abstract_excerpt":"We investigate an integrable boundary quench, in which one integrable boundary condition is suddenly switched to another. We develop a general framework for analyzing the resulting real-time dynamics based on form factors of bulk and boundary-changing operators. We first study the problem at the conformal point of the Lee-Yang model and then extend the analysis to its massive perturbation, where we examine the time evolution of the pre-quench vacuum and compute the vacuum-to-vacuum matrix elements of local operators inserted after the quench. The analytical results are validated by numerical c"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We develop a general framework for analyzing the resulting real-time dynamics based on form factors of bulk and boundary-changing operators. [...] we examine the time evolution of the pre-quench vacuum and compute the vacuum-to-vacuum matrix elements of local operators inserted after the quench.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The boundary conditions are integrable both before and after the quench, and the form-factor expansion remains valid and convergent for the time-dependent matrix elements in the massive theory.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A form factor framework is introduced to compute expectation values and time evolution after an integrable boundary quantum quench, applied to the Lee-Yang model at conformal and massive points with TCSA validation.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Form factors of bulk and boundary-changing operators determine the real-time evolution after an integrable boundary quench.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"576ce553ee421638b766c08da843760f2ebb1fb4a987f97788b22b1c3599b227"},"source":{"id":"2605.04823","kind":"arxiv","version":2},"verdict":{"id":"91726bf3-06cc-4dcf-9ae3-ce30f5208825","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-08T17:20:49.061542Z","strongest_claim":"We develop a general framework for analyzing the resulting real-time dynamics based on form factors of bulk and boundary-changing operators. [...] we examine the time evolution of the pre-quench vacuum and compute the vacuum-to-vacuum matrix elements of local operators inserted after the quench.","one_line_summary":"A form factor framework is introduced to compute expectation values and time evolution after an integrable boundary quantum quench, applied to the Lee-Yang model at conformal and massive points with TCSA validation.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The boundary conditions are integrable both before and after the quench, and the form-factor expansion remains valid and convergent for the time-dependent matrix elements in the massive theory.","pith_extraction_headline":"Form factors of bulk and boundary-changing operators determine the real-time evolution after an integrable boundary quench."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.04823/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-20T11:33:55.884590Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-19T22:01:28.984728Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T14:07:27.038882Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"c87df234864c095a395ae14b02110926d555504f33ee054c8fd363d1d3ccfa18"},"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"}