{"paper":{"title":"The free energy singularity of the asymmetric 6--vertex model and the excitations of the asymmetric XXZ chain","license":"","headline":"","cross_cats":["hep-th","nlin.SI","solv-int"],"primary_cat":"cond-mat","authors_text":"Birgit Wehefritz, Giuseppe Albertini, Silvio Renato Dahmen","submitted_at":"1996-06-18T15:44:31Z","abstract_excerpt":"We consider the asymmetric six--vertex model, {\\it i.e.} the symmetric six--vertex model in an external field with both horizontal and vertical components, and the relevant asymmetric $XXZ$ chain. The model is widely used to describe the equilibrium shape of a crystal. By means of the Bethe Ansatz solution we determine the exact free energy singularity, as function of both components of the field, at two special points on the phase boundary. We confirm the exponent $\\frac{3}{2}$ (already checked experimentally), as the antiferroelectric ordered phase is reached from the incommensurate phase no"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9606137","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"}