{"paper":{"title":"Twisting the N=2 String","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"A. J. Parkes, O. Lechtenfeld, S. V. Ketov","submitted_at":"1993-12-16T21:35:54Z","abstract_excerpt":"The most general homogeneous monodromy conditions in $N{=}2$ string theory are classified in terms of the conjugacy classes of the global symmetry group $U(1,1)\\otimes{\\bf Z}_2$. For classes which generate a discrete subgroup $\\G$, the corresponding target space backgrounds ${\\bf C}^{1,1}/\\G$ include half spaces, complex orbifolds and tori. We propose a generalization of the intercept formula to matrix-valued twists, but find massless physical states only for $\\Gamma{=}{\\bf 1}$ (untwisted) and $\\Gamma{=}{\\bf Z}_2$ (\\`a la Mathur and Mukhi), as well as for $\\Gamma$ being a parabolic element of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/9312150","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":""},"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"}