{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:BYPZSF2TJFI7NAO2PA2RJPP2KN","short_pith_number":"pith:BYPZSF2T","canonical_record":{"source":{"id":"1506.06549","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-06-22T11:00:47Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"89accb969b7275ff71336aae922f7480e8a5c816f9838f7dac641061c43c7ac7","abstract_canon_sha256":"7b965a65f3f7990f37d65493c8ed533be1ecf3c30791953bfa7900c2843cf657"},"schema_version":"1.0"},"canonical_sha256":"0e1f9917534951f681da783514bdfa535eadbe66e9aa1be311b41f99d49267b1","source":{"kind":"arxiv","id":"1506.06549","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.06549","created_at":"2026-05-18T01:41:44Z"},{"alias_kind":"arxiv_version","alias_value":"1506.06549v1","created_at":"2026-05-18T01:41:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.06549","created_at":"2026-05-18T01:41:44Z"},{"alias_kind":"pith_short_12","alias_value":"BYPZSF2TJFI7","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BYPZSF2TJFI7NAO2","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BYPZSF2T","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:BYPZSF2TJFI7NAO2PA2RJPP2KN","target":"record","payload":{"canonical_record":{"source":{"id":"1506.06549","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-06-22T11:00:47Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"89accb969b7275ff71336aae922f7480e8a5c816f9838f7dac641061c43c7ac7","abstract_canon_sha256":"7b965a65f3f7990f37d65493c8ed533be1ecf3c30791953bfa7900c2843cf657"},"schema_version":"1.0"},"canonical_sha256":"0e1f9917534951f681da783514bdfa535eadbe66e9aa1be311b41f99d49267b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:44.866589Z","signature_b64":"pU9re7RIgjONnmwLLFkGJpSPPhDNi2MKuWhuZn8pWdV0zkOeKBoKnjRxiTd824IxVs61N58+I4nbmhIeIq8TDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0e1f9917534951f681da783514bdfa535eadbe66e9aa1be311b41f99d49267b1","last_reissued_at":"2026-05-18T01:41:44.866073Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:44.866073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.06549","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"09LH/Ufl7SGD13O9Cg5/iyhStVOsG7PNz8yEw2woJe7yz8qBjiZJxpuGXp6fy9bnAOv6AnbUh+Al7sn00JthBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:20:58.976146Z"},"content_sha256":"982b2cc46686eebc67512937c88943b6f35a2c95758eac5ef29c2752e69c4dcb","schema_version":"1.0","event_id":"sha256:982b2cc46686eebc67512937c88943b6f35a2c95758eac5ef29c2752e69c4dcb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:BYPZSF2TJFI7NAO2PA2RJPP2KN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological quantum phase transition of light","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Chandan GN, N. Banerjee, Sujit Sarkar","submitted_at":"2015-06-22T11:00:47Z","abstract_excerpt":"We study theoretically the topological quantum phase transition in Cavity QED lattice. We predict the condition for non-topological phase to the topological phase transition conditions for three different model Hamiltonians in cavity QED lattice. We study these topological quantum phase transition through winding number, which is a topological invariant quantity. We argue that the appearance of topological phase in these systems where the discrete Z 2 symmetry broken. We show that the non-topological state is the vacuum state of the system where each cavity contains fermionic type excitations "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.06549","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:41:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gBeGSlgv479Yguy1lcDc0DW1Gy3uAEbbhKdD7ZJ7Gqm7tX4trgbeQ8YgNHlCIrDP/eW4EWFmMmDllG+p763bBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:20:58.976517Z"},"content_sha256":"65b19ff11ffa641233b57a1568d37a5eaf7e75cfed4f20abd2cc10e0585a3237","schema_version":"1.0","event_id":"sha256:65b19ff11ffa641233b57a1568d37a5eaf7e75cfed4f20abd2cc10e0585a3237"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN/bundle.json","state_url":"https://pith.science/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T10:20:58Z","links":{"resolver":"https://pith.science/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN","bundle":"https://pith.science/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN/bundle.json","state":"https://pith.science/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BYPZSF2TJFI7NAO2PA2RJPP2KN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BYPZSF2TJFI7NAO2PA2RJPP2KN","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":"7b965a65f3f7990f37d65493c8ed533be1ecf3c30791953bfa7900c2843cf657","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-06-22T11:00:47Z","title_canon_sha256":"89accb969b7275ff71336aae922f7480e8a5c816f9838f7dac641061c43c7ac7"},"schema_version":"1.0","source":{"id":"1506.06549","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.06549","created_at":"2026-05-18T01:41:44Z"},{"alias_kind":"arxiv_version","alias_value":"1506.06549v1","created_at":"2026-05-18T01:41:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.06549","created_at":"2026-05-18T01:41:44Z"},{"alias_kind":"pith_short_12","alias_value":"BYPZSF2TJFI7","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BYPZSF2TJFI7NAO2","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BYPZSF2T","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:65b19ff11ffa641233b57a1568d37a5eaf7e75cfed4f20abd2cc10e0585a3237","target":"graph","created_at":"2026-05-18T01:41:44Z","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 study theoretically the topological quantum phase transition in Cavity QED lattice. We predict the condition for non-topological phase to the topological phase transition conditions for three different model Hamiltonians in cavity QED lattice. We study these topological quantum phase transition through winding number, which is a topological invariant quantity. We argue that the appearance of topological phase in these systems where the discrete Z 2 symmetry broken. We show that the non-topological state is the vacuum state of the system where each cavity contains fermionic type excitations ","authors_text":"Chandan GN, N. Banerjee, Sujit Sarkar","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-06-22T11:00:47Z","title":"Topological quantum phase transition of light"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.06549","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":"sha256:982b2cc46686eebc67512937c88943b6f35a2c95758eac5ef29c2752e69c4dcb","target":"record","created_at":"2026-05-18T01:41:44Z","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":"7b965a65f3f7990f37d65493c8ed533be1ecf3c30791953bfa7900c2843cf657","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-06-22T11:00:47Z","title_canon_sha256":"89accb969b7275ff71336aae922f7480e8a5c816f9838f7dac641061c43c7ac7"},"schema_version":"1.0","source":{"id":"1506.06549","kind":"arxiv","version":1}},"canonical_sha256":"0e1f9917534951f681da783514bdfa535eadbe66e9aa1be311b41f99d49267b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0e1f9917534951f681da783514bdfa535eadbe66e9aa1be311b41f99d49267b1","first_computed_at":"2026-05-18T01:41:44.866073Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:44.866073Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pU9re7RIgjONnmwLLFkGJpSPPhDNi2MKuWhuZn8pWdV0zkOeKBoKnjRxiTd824IxVs61N58+I4nbmhIeIq8TDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:44.866589Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.06549","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:982b2cc46686eebc67512937c88943b6f35a2c95758eac5ef29c2752e69c4dcb","sha256:65b19ff11ffa641233b57a1568d37a5eaf7e75cfed4f20abd2cc10e0585a3237"],"state_sha256":"f85aaf958f69fafb06e619301e7fef26adbd3d0af64a44acd4ae2c0bb931497c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HMyCDD0iLFTaNCTWxE3wlD3j7P1wjjSkg1Noq1yFDQslwgnf1tc61A4gC+Ce+9EgsSnICfz2ltkWcJ2NdxX3CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T10:20:58.978477Z","bundle_sha256":"8538b974f4d8ddb528dc643eb48eeecb6e1dd7a1fe7913a297adcfcdde13f07a"}}