{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:DSDBFCV7MV4OMDPVIXDPHVNE63","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"41d6bdfc783df593ea069056ac4b60e4a459ff6bc5739bd37f78191dc7d12b39","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-12-15T16:31:19Z","title_canon_sha256":"1386502618318ec9a983f0b4048ae5ff603ccd1cee97105c1a3354fb4df27193"},"schema_version":"1.0","source":{"id":"1312.4165","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.4165","created_at":"2026-05-18T02:55:13Z"},{"alias_kind":"arxiv_version","alias_value":"1312.4165v3","created_at":"2026-05-18T02:55:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.4165","created_at":"2026-05-18T02:55:13Z"},{"alias_kind":"pith_short_12","alias_value":"DSDBFCV7MV4O","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"DSDBFCV7MV4OMDPV","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"DSDBFCV7","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:214357e5a7e5ee648c2395fcf41a2078ed605a3677d3589bd4a532f8350d8743","target":"graph","created_at":"2026-05-18T02:55:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"A boundary transfer matrix formulation allows to calculate the Loschmidt echo for one-dimensional quantum systems in the thermodynamic limit. We show that non-analyticities in the Loschmidt echo and zeros for the Loschmidt amplitude in the complex plane (Fisher zeros) are caused by a crossing of eigenvalues in the spectrum of the transfer matrix. Using a density-matrix renormalization group algorithm applied to these transfer matrices we numerically investigate the Loschmidt echo and the Fisher zeros for quantum quenches in the XXZ model with a uniform and a staggered magnetic field. We give e","authors_text":"F. Andraschko, J. Sirker","cross_cats":["cond-mat.stat-mech","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-12-15T16:31:19Z","title":"Dynamical quantum phase transitions and the Loschmidt echo: A transfer matrix approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.4165","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:be8b20a5f7a2923f3412542717ebb5f537400496486bdf0d5a6070839394f0b7","target":"record","created_at":"2026-05-18T02:55:13Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"41d6bdfc783df593ea069056ac4b60e4a459ff6bc5739bd37f78191dc7d12b39","cross_cats_sorted":["cond-mat.stat-mech","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2013-12-15T16:31:19Z","title_canon_sha256":"1386502618318ec9a983f0b4048ae5ff603ccd1cee97105c1a3354fb4df27193"},"schema_version":"1.0","source":{"id":"1312.4165","kind":"arxiv","version":3}},"canonical_sha256":"1c86128abf6578e60df545c6f3d5a4f6d11baecfb7f80426f23fe69dcd981985","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c86128abf6578e60df545c6f3d5a4f6d11baecfb7f80426f23fe69dcd981985","first_computed_at":"2026-05-18T02:55:13.094296Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:55:13.094296Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"G+/8IUJ/Po/ttEgLPjMDUVTUsbpZOyr+PYCiu5u52qKjmVmbhvMRAQwcRft+Cv5NbfGjzDxeIV04HQD/iJ30CA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:55:13.094696Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.4165","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:be8b20a5f7a2923f3412542717ebb5f537400496486bdf0d5a6070839394f0b7","sha256:214357e5a7e5ee648c2395fcf41a2078ed605a3677d3589bd4a532f8350d8743"],"state_sha256":"cecc6e3a4e4fae893c75d6472b1e9e9830c25ec2eb69d595a21e3f09b7ce734c"}