{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:V6L3D6R3FZ5I3H7DNJUDIJR6JU","short_pith_number":"pith:V6L3D6R3","canonical_record":{"source":{"id":"1810.12551","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-30T07:20:26Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"0bac6b44fe324a8a45d9acbb342d7f1237fbdcdd80eb6a6a277d1fa17d868d45","abstract_canon_sha256":"ecf9d4c5c70b300f448a070ba7afffa8f39e0c602679659704a8f4e7352c7588"},"schema_version":"1.0"},"canonical_sha256":"af97b1fa3b2e7a8d9fe36a6834263e4d019e356013e4e351fd4ba3bbff3cfda4","source":{"kind":"arxiv","id":"1810.12551","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.12551","created_at":"2026-05-17T23:59:22Z"},{"alias_kind":"arxiv_version","alias_value":"1810.12551v2","created_at":"2026-05-17T23:59:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.12551","created_at":"2026-05-17T23:59:22Z"},{"alias_kind":"pith_short_12","alias_value":"V6L3D6R3FZ5I","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"V6L3D6R3FZ5I3H7D","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"V6L3D6R3","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:V6L3D6R3FZ5I3H7DNJUDIJR6JU","target":"record","payload":{"canonical_record":{"source":{"id":"1810.12551","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-30T07:20:26Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"0bac6b44fe324a8a45d9acbb342d7f1237fbdcdd80eb6a6a277d1fa17d868d45","abstract_canon_sha256":"ecf9d4c5c70b300f448a070ba7afffa8f39e0c602679659704a8f4e7352c7588"},"schema_version":"1.0"},"canonical_sha256":"af97b1fa3b2e7a8d9fe36a6834263e4d019e356013e4e351fd4ba3bbff3cfda4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:22.149124Z","signature_b64":"tSw/uryKhYIuLdLHwsOvy/w7jeCzINET912lBrOSrYsGOwVVai0Ym35nJn6f4nnFGcrQGMYONbGYYAZy6uuWBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af97b1fa3b2e7a8d9fe36a6834263e4d019e356013e4e351fd4ba3bbff3cfda4","last_reissued_at":"2026-05-17T23:59:22.148689Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:22.148689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.12551","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:59:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d7ksd1woXCfuqnaPfxjbqo4C+DVK0Kc/9xK2VUh8hwnzxKrRb+Z0RuwoxWlvKgVWM9ybV//5KRVEpjwi0pAPBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:25:12.388724Z"},"content_sha256":"39bd5babe7a3d54113811ee69b30cd00c80dcab220b89f12bc7969313cc1b1e0","schema_version":"1.0","event_id":"sha256:39bd5babe7a3d54113811ee69b30cd00c80dcab220b89f12bc7969313cc1b1e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:V6L3D6R3FZ5I3H7DNJUDIJR6JU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dielectric constant of monolayer transition metal dichalcogenides across excitonic resonances","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. Thilagam","submitted_at":"2018-10-30T07:20:26Z","abstract_excerpt":"We analyze the dielectric-function spectra of low dimensional transition metal dichalcogenides (TMDCs) using a fully analytical model of the complex dielectric function that is applicable in fractional dimensional space. We extract the dimensionalities of the $A$ and $B$ excitons as well as their Lorentzian broadening widths by fitting the model to experimental data in the spectral range of photon energies (1.5 - 3 eV). Our results show the significant contribution of the lowest ground exciton state to the dielectric properties of exemplary monolayer materials (MoS$_2$, MoSe$_2$ and WSe$_2$). "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.12551","kind":"arxiv","version":2},"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":"2026-05-17T23:59:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zG+4TqG+M+O7ctnAXQiYQT9JDMCkzDCqKUU7LbdXIANGeHma0GXAucn/pZ/fP7GPjCPjoLvAJpOpMCLiRlHzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T03:25:12.389274Z"},"content_sha256":"e1ad42a02371cbbe0e0742e6a4909ec16f6d48d07b5f64781f92448b542a3761","schema_version":"1.0","event_id":"sha256:e1ad42a02371cbbe0e0742e6a4909ec16f6d48d07b5f64781f92448b542a3761"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU/bundle.json","state_url":"https://pith.science/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU/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":"2026-06-05T03:25:12Z","links":{"resolver":"https://pith.science/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU","bundle":"https://pith.science/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU/bundle.json","state":"https://pith.science/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V6L3D6R3FZ5I3H7DNJUDIJR6JU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:V6L3D6R3FZ5I3H7DNJUDIJR6JU","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":"ecf9d4c5c70b300f448a070ba7afffa8f39e0c602679659704a8f4e7352c7588","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-30T07:20:26Z","title_canon_sha256":"0bac6b44fe324a8a45d9acbb342d7f1237fbdcdd80eb6a6a277d1fa17d868d45"},"schema_version":"1.0","source":{"id":"1810.12551","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.12551","created_at":"2026-05-17T23:59:22Z"},{"alias_kind":"arxiv_version","alias_value":"1810.12551v2","created_at":"2026-05-17T23:59:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.12551","created_at":"2026-05-17T23:59:22Z"},{"alias_kind":"pith_short_12","alias_value":"V6L3D6R3FZ5I","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"V6L3D6R3FZ5I3H7D","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"V6L3D6R3","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:e1ad42a02371cbbe0e0742e6a4909ec16f6d48d07b5f64781f92448b542a3761","target":"graph","created_at":"2026-05-17T23:59:22Z","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 analyze the dielectric-function spectra of low dimensional transition metal dichalcogenides (TMDCs) using a fully analytical model of the complex dielectric function that is applicable in fractional dimensional space. We extract the dimensionalities of the $A$ and $B$ excitons as well as their Lorentzian broadening widths by fitting the model to experimental data in the spectral range of photon energies (1.5 - 3 eV). Our results show the significant contribution of the lowest ground exciton state to the dielectric properties of exemplary monolayer materials (MoS$_2$, MoSe$_2$ and WSe$_2$). ","authors_text":"A. Thilagam","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-30T07:20:26Z","title":"Dielectric constant of monolayer transition metal dichalcogenides across excitonic resonances"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.12551","kind":"arxiv","version":2},"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":"sha256:39bd5babe7a3d54113811ee69b30cd00c80dcab220b89f12bc7969313cc1b1e0","target":"record","created_at":"2026-05-17T23:59:22Z","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":"ecf9d4c5c70b300f448a070ba7afffa8f39e0c602679659704a8f4e7352c7588","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-30T07:20:26Z","title_canon_sha256":"0bac6b44fe324a8a45d9acbb342d7f1237fbdcdd80eb6a6a277d1fa17d868d45"},"schema_version":"1.0","source":{"id":"1810.12551","kind":"arxiv","version":2}},"canonical_sha256":"af97b1fa3b2e7a8d9fe36a6834263e4d019e356013e4e351fd4ba3bbff3cfda4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af97b1fa3b2e7a8d9fe36a6834263e4d019e356013e4e351fd4ba3bbff3cfda4","first_computed_at":"2026-05-17T23:59:22.148689Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:22.148689Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tSw/uryKhYIuLdLHwsOvy/w7jeCzINET912lBrOSrYsGOwVVai0Ym35nJn6f4nnFGcrQGMYONbGYYAZy6uuWBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:22.149124Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.12551","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39bd5babe7a3d54113811ee69b30cd00c80dcab220b89f12bc7969313cc1b1e0","sha256:e1ad42a02371cbbe0e0742e6a4909ec16f6d48d07b5f64781f92448b542a3761"],"state_sha256":"d36e9d70d0329c2fda8e169c842527089a1bf3e2edfbc56973df7632fbe9973c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vzqN0dKOTYxFFqg8wWRyD68kPLMneEwCm/OmzG2R6kvHsP6MyboeMe2xjTCnduLDL3FHbovQo8WqCSwKbhaDAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T03:25:12.392108Z","bundle_sha256":"fdf7b66ed6007e0c10c04ea95d923e5cd1a043aeaff3098bb578ff0da055c234"}}