{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:EFXVTYPCLP3X5IJW5RSCBFT73M","short_pith_number":"pith:EFXVTYPC","canonical_record":{"source":{"id":"2308.11108","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2023-08-22T01:05:37Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"fab810951fef0a5cd75993dcfba0a08b5afe0fd96770b9c334180cb1b217396c","abstract_canon_sha256":"d45fab7ea1ccfb58fe88ba6491557423c55bfc6736d0209c3e675206ea264137"},"schema_version":"1.0"},"canonical_sha256":"216f59e1e25bf77ea136ec6420967fdb092343431eaba00191bad63583d80993","source":{"kind":"arxiv","id":"2308.11108","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11108","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11108v1","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11108","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"EFXVTYPCLP3X","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"pith_short_16","alias_value":"EFXVTYPCLP3X5IJW","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"pith_short_8","alias_value":"EFXVTYPC","created_at":"2026-07-05T06:43:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:EFXVTYPCLP3X5IJW5RSCBFT73M","target":"record","payload":{"canonical_record":{"source":{"id":"2308.11108","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2023-08-22T01:05:37Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"fab810951fef0a5cd75993dcfba0a08b5afe0fd96770b9c334180cb1b217396c","abstract_canon_sha256":"d45fab7ea1ccfb58fe88ba6491557423c55bfc6736d0209c3e675206ea264137"},"schema_version":"1.0"},"canonical_sha256":"216f59e1e25bf77ea136ec6420967fdb092343431eaba00191bad63583d80993","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:43:29.755424Z","signature_b64":"8u6APP0q6GVdoEshfjGSJ3gZMjDOY2Rv+v/1Bq2Eqf/DhgWPUzmfOTa7d34zkpaGbT3pfO6jtK0OY+laitr2BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"216f59e1e25bf77ea136ec6420967fdb092343431eaba00191bad63583d80993","last_reissued_at":"2026-07-05T06:43:29.754980Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:43:29.754980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.11108","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":"2026-07-05T06:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xeXFa3ll7Iec6Wf4/9xN1AMVWSDswg9pwqUu9le2rginEC4e6W86x5hJS7QqeessRbsGChNUYe/CdeiZPt9EAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T20:54:32.184250Z"},"content_sha256":"b118cd57adb228ddd62361399c101fa423116a0f4ccae2b197b8d24b241c05f4","schema_version":"1.0","event_id":"sha256:b118cd57adb228ddd62361399c101fa423116a0f4ccae2b197b8d24b241c05f4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:EFXVTYPCLP3X5IJW5RSCBFT73M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrastrong Light-Matter Coupling in 2D Metal-Chalcogenates","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.optics","authors_text":"Arka Majumdar, Bongjun Choi, Christopher E. Stevens, Christopher Munley, Deep Jariwala, Jason Lynch, J. Nathan Hohman, Joshua Hendrickson, Mariya Aleksich, P. James Shuck, Sridhar Shenoy, Surendra B. Anantharaman, Thomas Darlington","submitted_at":"2023-08-22T01:05:37Z","abstract_excerpt":"Hybridization of excitons with photons to form hybrid quasiparticles, exciton-polaritons (EPs), has been widely investigated in a range of semiconductor material systems coupled to photonic cavities. Self-hybridization occurs when the semiconductor itself can serve as the photonic cavity medium resulting in strongly-coupled EPs with Rabi splitting energies > 200 meV at room temperatures which recently were observed in layered two-dimensional (2D) excitonic materials. Here, we report an extreme version of this phenomenon, an ultrastrong EP coupling, in a nascent, 2D excitonic system, the metal "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11108","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2308.11108/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iy3n1SkUPze9sU9Hk0CbImBip+nI4gtp14hsn4lxbni5rf7PxqZNPfxIwWt8hboktt3PSuRtJrZBQOmWkDHSAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-10T20:54:32.184647Z"},"content_sha256":"e1b2e2bc6455b1ca968a1f5a6e35f9d6c72e8907c29a648c922da9803ce1ae0f","schema_version":"1.0","event_id":"sha256:e1b2e2bc6455b1ca968a1f5a6e35f9d6c72e8907c29a648c922da9803ce1ae0f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EFXVTYPCLP3X5IJW5RSCBFT73M/bundle.json","state_url":"https://pith.science/pith/EFXVTYPCLP3X5IJW5RSCBFT73M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EFXVTYPCLP3X5IJW5RSCBFT73M/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":"2026-07-10T20:54:32Z","links":{"resolver":"https://pith.science/pith/EFXVTYPCLP3X5IJW5RSCBFT73M","bundle":"https://pith.science/pith/EFXVTYPCLP3X5IJW5RSCBFT73M/bundle.json","state":"https://pith.science/pith/EFXVTYPCLP3X5IJW5RSCBFT73M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EFXVTYPCLP3X5IJW5RSCBFT73M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:EFXVTYPCLP3X5IJW5RSCBFT73M","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":"d45fab7ea1ccfb58fe88ba6491557423c55bfc6736d0209c3e675206ea264137","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2023-08-22T01:05:37Z","title_canon_sha256":"fab810951fef0a5cd75993dcfba0a08b5afe0fd96770b9c334180cb1b217396c"},"schema_version":"1.0","source":{"id":"2308.11108","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.11108","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"2308.11108v1","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.11108","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"EFXVTYPCLP3X","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"pith_short_16","alias_value":"EFXVTYPCLP3X5IJW","created_at":"2026-07-05T06:43:29Z"},{"alias_kind":"pith_short_8","alias_value":"EFXVTYPC","created_at":"2026-07-05T06:43:29Z"}],"graph_snapshots":[{"event_id":"sha256:e1b2e2bc6455b1ca968a1f5a6e35f9d6c72e8907c29a648c922da9803ce1ae0f","target":"graph","created_at":"2026-07-05T06:43:29Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2308.11108/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hybridization of excitons with photons to form hybrid quasiparticles, exciton-polaritons (EPs), has been widely investigated in a range of semiconductor material systems coupled to photonic cavities. Self-hybridization occurs when the semiconductor itself can serve as the photonic cavity medium resulting in strongly-coupled EPs with Rabi splitting energies > 200 meV at room temperatures which recently were observed in layered two-dimensional (2D) excitonic materials. Here, we report an extreme version of this phenomenon, an ultrastrong EP coupling, in a nascent, 2D excitonic system, the metal ","authors_text":"Arka Majumdar, Bongjun Choi, Christopher E. Stevens, Christopher Munley, Deep Jariwala, Jason Lynch, J. Nathan Hohman, Joshua Hendrickson, Mariya Aleksich, P. James Shuck, Sridhar Shenoy, Surendra B. Anantharaman, Thomas Darlington","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2023-08-22T01:05:37Z","title":"Ultrastrong Light-Matter Coupling in 2D Metal-Chalcogenates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.11108","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:b118cd57adb228ddd62361399c101fa423116a0f4ccae2b197b8d24b241c05f4","target":"record","created_at":"2026-07-05T06:43:29Z","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":"d45fab7ea1ccfb58fe88ba6491557423c55bfc6736d0209c3e675206ea264137","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2023-08-22T01:05:37Z","title_canon_sha256":"fab810951fef0a5cd75993dcfba0a08b5afe0fd96770b9c334180cb1b217396c"},"schema_version":"1.0","source":{"id":"2308.11108","kind":"arxiv","version":1}},"canonical_sha256":"216f59e1e25bf77ea136ec6420967fdb092343431eaba00191bad63583d80993","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"216f59e1e25bf77ea136ec6420967fdb092343431eaba00191bad63583d80993","first_computed_at":"2026-07-05T06:43:29.754980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:43:29.754980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8u6APP0q6GVdoEshfjGSJ3gZMjDOY2Rv+v/1Bq2Eqf/DhgWPUzmfOTa7d34zkpaGbT3pfO6jtK0OY+laitr2BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:43:29.755424Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.11108","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b118cd57adb228ddd62361399c101fa423116a0f4ccae2b197b8d24b241c05f4","sha256:e1b2e2bc6455b1ca968a1f5a6e35f9d6c72e8907c29a648c922da9803ce1ae0f"],"state_sha256":"8f980fa96965482622d4ac3d4e272d6948402d6d11ba05d732b497256fb54959"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"akAwDqMaAV3SBm91JkEP4kovvVIa51rlwy36izl2NPyw9KHnE/XzTN9W5grIuZ+ERh1voSLueHTyZNLHqMc4DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-10T20:54:32.187023Z","bundle_sha256":"61cf479e8d5eb1d8126a2fcaa802ad5f0a5110e2b8e673471887ec7f4275ee74"}}