{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:EXC4DVYBWQQ2VIHDDNEZ52MX7G","short_pith_number":"pith:EXC4DVYB","canonical_record":{"source":{"id":"1707.00422","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-07-03T07:05:32Z","cross_cats_sorted":[],"title_canon_sha256":"5da834605f8d6aa12216557104def1907826ab85223568a48133434cb5bb81c7","abstract_canon_sha256":"3d2620cdb04271cb86fdb942f277310e5f6ceecac3013b32e3207a6e4e52ac27"},"schema_version":"1.0"},"canonical_sha256":"25c5c1d701b421aaa0e31b499ee997f99e997eb47a89a986171984b6ced98dbb","source":{"kind":"arxiv","id":"1707.00422","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.00422","created_at":"2026-05-18T00:20:52Z"},{"alias_kind":"arxiv_version","alias_value":"1707.00422v1","created_at":"2026-05-18T00:20:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.00422","created_at":"2026-05-18T00:20:52Z"},{"alias_kind":"pith_short_12","alias_value":"EXC4DVYBWQQ2","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EXC4DVYBWQQ2VIHD","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EXC4DVYB","created_at":"2026-05-18T12:31:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:EXC4DVYBWQQ2VIHDDNEZ52MX7G","target":"record","payload":{"canonical_record":{"source":{"id":"1707.00422","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-07-03T07:05:32Z","cross_cats_sorted":[],"title_canon_sha256":"5da834605f8d6aa12216557104def1907826ab85223568a48133434cb5bb81c7","abstract_canon_sha256":"3d2620cdb04271cb86fdb942f277310e5f6ceecac3013b32e3207a6e4e52ac27"},"schema_version":"1.0"},"canonical_sha256":"25c5c1d701b421aaa0e31b499ee997f99e997eb47a89a986171984b6ced98dbb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:52.233442Z","signature_b64":"7NVNbJPuQeZT++rFan+qz0zGf+anXQl5xK3ULlcz3UQhtMNRkZI6ak8E2uJAy1F/X/nHYmqvxJgm604U9ZA2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25c5c1d701b421aaa0e31b499ee997f99e997eb47a89a986171984b6ced98dbb","last_reissued_at":"2026-05-18T00:20:52.233043Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:52.233043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.00422","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":"2026-05-18T00:20:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EOjd3A2hKUKESSl6qYZsOS4QII2h3HxeBRsFy+hwyh4ZOuggoApKbc21DFWVRCxjqmg2geuzAu+DE+cfZbuwAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T18:42:03.766679Z"},"content_sha256":"f60db800d87c4ac6ee9eb76ab7522d62a466d3aa873c3cde3febd90724dd1078","schema_version":"1.0","event_id":"sha256:f60db800d87c4ac6ee9eb76ab7522d62a466d3aa873c3cde3febd90724dd1078"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:EXC4DVYBWQQ2VIHDDNEZ52MX7G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Compact stars in quantum spacetime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"E. Harikumar, Zuhair N S","submitted_at":"2017-07-03T07:05:32Z","abstract_excerpt":"We derive bounds on the deformation parameter of the $\\kappa$-spacetime by analyzing the effect of non-commutativity on astrophysical model. We study compact stars, taken to be degenerate Fermi gas, in non-commutative spacetime. Using tools of statistical mechanics, we derive the degeneracy pressure of the compact star in $\\kappa$-spacetime and from the hydrostatic equilibrium conditions we obtain a bound on the deformation parameter. We independently derive this bound using generalized uncertainty principle, which is a characteristic feature of quantum gravity approaches, strengthening the bo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.00422","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":"2026-05-18T00:20:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IXLHmYvbrlhXiJFz27FTZv1uEFejl1GP+eR/85XRyRAf4F4C+JIDjKzJgITBSRPB4VMyALsH2t24mIIZOdGUCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T18:42:03.767015Z"},"content_sha256":"d2a517f3483bc819686ee5bd8187bfb8389003880ca734949b0c3a1539d03b8e","schema_version":"1.0","event_id":"sha256:d2a517f3483bc819686ee5bd8187bfb8389003880ca734949b0c3a1539d03b8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G/bundle.json","state_url":"https://pith.science/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G/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":"2026-06-01T18:42:03Z","links":{"resolver":"https://pith.science/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G","bundle":"https://pith.science/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G/bundle.json","state":"https://pith.science/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EXC4DVYBWQQ2VIHDDNEZ52MX7G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:EXC4DVYBWQQ2VIHDDNEZ52MX7G","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":"3d2620cdb04271cb86fdb942f277310e5f6ceecac3013b32e3207a6e4e52ac27","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-07-03T07:05:32Z","title_canon_sha256":"5da834605f8d6aa12216557104def1907826ab85223568a48133434cb5bb81c7"},"schema_version":"1.0","source":{"id":"1707.00422","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.00422","created_at":"2026-05-18T00:20:52Z"},{"alias_kind":"arxiv_version","alias_value":"1707.00422v1","created_at":"2026-05-18T00:20:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.00422","created_at":"2026-05-18T00:20:52Z"},{"alias_kind":"pith_short_12","alias_value":"EXC4DVYBWQQ2","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_16","alias_value":"EXC4DVYBWQQ2VIHD","created_at":"2026-05-18T12:31:12Z"},{"alias_kind":"pith_short_8","alias_value":"EXC4DVYB","created_at":"2026-05-18T12:31:12Z"}],"graph_snapshots":[{"event_id":"sha256:d2a517f3483bc819686ee5bd8187bfb8389003880ca734949b0c3a1539d03b8e","target":"graph","created_at":"2026-05-18T00:20:52Z","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 derive bounds on the deformation parameter of the $\\kappa$-spacetime by analyzing the effect of non-commutativity on astrophysical model. We study compact stars, taken to be degenerate Fermi gas, in non-commutative spacetime. Using tools of statistical mechanics, we derive the degeneracy pressure of the compact star in $\\kappa$-spacetime and from the hydrostatic equilibrium conditions we obtain a bound on the deformation parameter. We independently derive this bound using generalized uncertainty principle, which is a characteristic feature of quantum gravity approaches, strengthening the bo","authors_text":"E. Harikumar, Zuhair N S","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-07-03T07:05:32Z","title":"Compact stars in quantum spacetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.00422","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:f60db800d87c4ac6ee9eb76ab7522d62a466d3aa873c3cde3febd90724dd1078","target":"record","created_at":"2026-05-18T00:20:52Z","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":"3d2620cdb04271cb86fdb942f277310e5f6ceecac3013b32e3207a6e4e52ac27","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2017-07-03T07:05:32Z","title_canon_sha256":"5da834605f8d6aa12216557104def1907826ab85223568a48133434cb5bb81c7"},"schema_version":"1.0","source":{"id":"1707.00422","kind":"arxiv","version":1}},"canonical_sha256":"25c5c1d701b421aaa0e31b499ee997f99e997eb47a89a986171984b6ced98dbb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25c5c1d701b421aaa0e31b499ee997f99e997eb47a89a986171984b6ced98dbb","first_computed_at":"2026-05-18T00:20:52.233043Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:52.233043Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7NVNbJPuQeZT++rFan+qz0zGf+anXQl5xK3ULlcz3UQhtMNRkZI6ak8E2uJAy1F/X/nHYmqvxJgm604U9ZA2CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:52.233442Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.00422","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f60db800d87c4ac6ee9eb76ab7522d62a466d3aa873c3cde3febd90724dd1078","sha256:d2a517f3483bc819686ee5bd8187bfb8389003880ca734949b0c3a1539d03b8e"],"state_sha256":"dab1973ea69c1647bdd3f988957197099c3fec36cbb2008ca378286c00dcf9a1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GuMvTcjjY/PpFG1z0mDPf+FRaUbssA9ZAa8Plovp+Ykmkimvg4BjujJQnC6+l0hTxq2GIjVG+uYpctfFnqQUAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T18:42:03.768846Z","bundle_sha256":"41e405f2118d89ecc009ee045ec6a6c21fe7114d536821c78e28d2c31aa14618"}}