{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:EW7MYUZM5CRXDN3MKUG4HA327K","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":"1c0a1539342bdf5aaba6fb39d5e68d7393ff19c73901de2f41d4a188834ce94a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-21T08:47:35Z","title_canon_sha256":"ae1c5e350afa0321a91c14a02d4e77e882cddf0fb338e12ac19d3b6d5291d9f5"},"schema_version":"1.0","source":{"id":"1904.09567","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.09567","created_at":"2026-05-17T23:48:03Z"},{"alias_kind":"arxiv_version","alias_value":"1904.09567v1","created_at":"2026-05-17T23:48:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.09567","created_at":"2026-05-17T23:48:03Z"},{"alias_kind":"pith_short_12","alias_value":"EW7MYUZM5CRX","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"EW7MYUZM5CRXDN3M","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"EW7MYUZM","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:889c0dc6197ae0c5b1f07c5131405daa39508347bda563a63d07e00825c1a824","target":"graph","created_at":"2026-05-17T23:48:03Z","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":"We present an analytical method for the two-qubit quantum Rabi model. While still operating in the frame of the generalized rotating-wave approximation (GRWA), our method further embraces the idea of introducing variational parameters. The optimal value of the variational parameter is determined by minimizing the energy function of the ground state. Comparing with numerical exact results, we show that our method evidently improves the accuracy of the conventional GRWA in calculating fundamental physical quantities, such as energy spectra, mean photon number, and dynamics. Interestingly, the ac","authors_text":"Bin-Bin Mao, Hong-Gang Luo, Liangsheng Li, Maoxin Liu, Wei Wu, Wen-Long You, Yimin Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-21T08:47:35Z","title":"Variational generalized rotating-wave approximation in the two-qubit quantum Rabi model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.09567","kind":"arxiv","version":1},"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:c8d447afbeda05ad0036b317cf3ea964edde8a18c9d3520dde641ac2bfa33551","target":"record","created_at":"2026-05-17T23:48:03Z","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":"1c0a1539342bdf5aaba6fb39d5e68d7393ff19c73901de2f41d4a188834ce94a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-04-21T08:47:35Z","title_canon_sha256":"ae1c5e350afa0321a91c14a02d4e77e882cddf0fb338e12ac19d3b6d5291d9f5"},"schema_version":"1.0","source":{"id":"1904.09567","kind":"arxiv","version":1}},"canonical_sha256":"25becc532ce8a371b76c550dc3837afabc931968609dfd3cb6d9e8bbf85b2991","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25becc532ce8a371b76c550dc3837afabc931968609dfd3cb6d9e8bbf85b2991","first_computed_at":"2026-05-17T23:48:03.903187Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:03.903187Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BDq5oOE6QePWcjmgJy1iXkWls26gFzPxH8u/Z0LiPV+oW39BQZwyhFseB5K9mUr9C4DachFDxJUrvH8chUqCAw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:03.903628Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.09567","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8d447afbeda05ad0036b317cf3ea964edde8a18c9d3520dde641ac2bfa33551","sha256:889c0dc6197ae0c5b1f07c5131405daa39508347bda563a63d07e00825c1a824"],"state_sha256":"1d6f8b84e13075c39d1cd3e2f462795ee20e09e46a42354b4c63d996cebdf770"}