{"paper":{"title":"Universal corner entanglement of Dirac fermions and gapless bosons from the continuum to the lattice","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","hep-th"],"primary_cat":"cond-mat.str-el","authors_text":"Anushya Chandran, Johannes Helmes, Lauren E. Hayward Sierens, Roger G. Melko, William Witczak-Krempa","submitted_at":"2016-06-09T20:00:08Z","abstract_excerpt":"A quantum critical (QC) fluid exhibits universal subleading corrections to the area law of its entanglement entropies. In two dimensions when the partition involves a corner of angle $\\theta$, the subleading term is logarithmic with coefficient $a_\\alpha(\\theta)$ for the $\\alpha$-R\\'enyi entropy. In the smooth limit $\\theta\\!\\to\\!\\pi$, $a_1(\\theta)$ yields the central charge of the stress tensor when the QC point is described by a conformal field theory (CFT). For general R\\'enyi indices and angles, $a_\\alpha(\\theta)$ is richer and few general results exist. We study $a_\\alpha(\\theta)$ focusin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.03096","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":""},"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"}