{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:ETTEVQVHWCJ7E3VXVVGH5XP76D","short_pith_number":"pith:ETTEVQVH","schema_version":"1.0","canonical_sha256":"24e64ac2a7b093f26eb7ad4c7eddfff0e9b3c96c4c03d01fc4a52835c3073b52","source":{"kind":"arxiv","id":"1612.00016","version":1},"attestation_state":"computed","paper":{"title":"Competing phases in spin ladders with ring exchange and frustration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Alexandros Metavitsiadis, Sebastian Eggert","submitted_at":"2016-11-30T21:00:02Z","abstract_excerpt":"The ground state properties of spin-1/2 ladders are studied, emphasizing the role of frustration and ring exchange coupling. We present a unified field theory for ladders with general coupling constants and geometry. Rich phase diagrams can be deduced by using a renormalization group calculation for ladders with in--chain next nearest neighbor interactions and plaquette ring exchange coupling. In addition to established phases such as Haldane, rung singlet, and dimerized phases, we also observe a surprising instability towards an incommensurate phase for weak interchain couplings, which is cha"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1612.00016","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2016-11-30T21:00:02Z","cross_cats_sorted":[],"title_canon_sha256":"08dcd8da6be6f4907156bc3251747e47a66ef574c6ef0a02c0a34d8c912533e5","abstract_canon_sha256":"5e692be7f1186f0a1f2496d725a0a12c3b3247b4bd899b3200fd44ba8c158714"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:46:13.623627Z","signature_b64":"H3sao1oCvcLfVAphnadfelwXgGNAMrrhoKcnxbImM1o6Dyb4c2ermpqj6StND+BG5dev/+YDJ39YLQ2hoOVMBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"24e64ac2a7b093f26eb7ad4c7eddfff0e9b3c96c4c03d01fc4a52835c3073b52","last_reissued_at":"2026-05-18T00:46:13.622981Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:46:13.622981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Competing phases in spin ladders with ring exchange and frustration","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Alexandros Metavitsiadis, Sebastian Eggert","submitted_at":"2016-11-30T21:00:02Z","abstract_excerpt":"The ground state properties of spin-1/2 ladders are studied, emphasizing the role of frustration and ring exchange coupling. We present a unified field theory for ladders with general coupling constants and geometry. Rich phase diagrams can be deduced by using a renormalization group calculation for ladders with in--chain next nearest neighbor interactions and plaquette ring exchange coupling. In addition to established phases such as Haldane, rung singlet, and dimerized phases, we also observe a surprising instability towards an incommensurate phase for weak interchain couplings, which is cha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.00016","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1612.00016","created_at":"2026-05-18T00:46:13.623082+00:00"},{"alias_kind":"arxiv_version","alias_value":"1612.00016v1","created_at":"2026-05-18T00:46:13.623082+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.00016","created_at":"2026-05-18T00:46:13.623082+00:00"},{"alias_kind":"pith_short_12","alias_value":"ETTEVQVHWCJ7","created_at":"2026-05-18T12:30:15.759754+00:00"},{"alias_kind":"pith_short_16","alias_value":"ETTEVQVHWCJ7E3VX","created_at":"2026-05-18T12:30:15.759754+00:00"},{"alias_kind":"pith_short_8","alias_value":"ETTEVQVH","created_at":"2026-05-18T12:30:15.759754+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D","json":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D.json","graph_json":"https://pith.science/api/pith-number/ETTEVQVHWCJ7E3VXVVGH5XP76D/graph.json","events_json":"https://pith.science/api/pith-number/ETTEVQVHWCJ7E3VXVVGH5XP76D/events.json","paper":"https://pith.science/paper/ETTEVQVH"},"agent_actions":{"view_html":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D","download_json":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D.json","view_paper":"https://pith.science/paper/ETTEVQVH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1612.00016&json=true","fetch_graph":"https://pith.science/api/pith-number/ETTEVQVHWCJ7E3VXVVGH5XP76D/graph.json","fetch_events":"https://pith.science/api/pith-number/ETTEVQVHWCJ7E3VXVVGH5XP76D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D/action/storage_attestation","attest_author":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D/action/author_attestation","sign_citation":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D/action/citation_signature","submit_replication":"https://pith.science/pith/ETTEVQVHWCJ7E3VXVVGH5XP76D/action/replication_record"}},"created_at":"2026-05-18T00:46:13.623082+00:00","updated_at":"2026-05-18T00:46:13.623082+00:00"}