{"paper":{"title":"Dynamic structure factor of a spin-1/2 Heisenberg chain with long-range interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Anders W. Sandvik, Gabe Schumm, Sibin Yang","submitted_at":"2024-12-19T18:43:01Z","abstract_excerpt":"We study the dynamic structure factor $S(k,\\omega)$ of the spin-1/2 chain with long-range, power-law decaying unfrustrated (sign\n  alternating) Heisenberg interactions $J_r \\sim (-1)^{r-1} r^{-\\alpha}$ by means of stochastic analytic continuation (SAC) of imaginary-time\n  correlations computed by quantum Monte Carlo calculations. We do so in both the long-range antiferromagnetic (AFM, for $\\alpha \\lesssim 2.23$) and\n  quasi-long-range-ordered (QLRO, for $\\alpha \\gtrsim 2.23$) ground-state phases, employing different SAC parametrizations of $S(k,\\omega)$ to resolve sharp\n  edges characteristic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.15168","kind":"arxiv","version":2},"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/2412.15168/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"}