{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:2FDCAPGY3AJQBT5MFGFP25Z6VZ","short_pith_number":"pith:2FDCAPGY","schema_version":"1.0","canonical_sha256":"d146203cd8d81300cfac298afd773eae536ccf18e9b0b1084325eb3e5e450738","source":{"kind":"arxiv","id":"2005.11889","version":4},"attestation_state":"computed","paper":{"title":"Early mass varying neutrino dark energy: Nugget formation and Hubble anomaly","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Antareep Gogoi, Prolay Chanda, Ravi Kumar Sharma, Subinoy Das","submitted_at":"2020-05-25T02:27:59Z","abstract_excerpt":"We present a novel scenario, in which light ($\\sim$ few \\rm{eV}) dark fermions (sterile neutrinos) interact with a scalar field like in mass varying neutrino dark energy theories. As the $\\rm{eV}$ sterile states naturally become non-relativistic before the Matter Radiation Equality (MRE), we show that the neutrino-scalar fluid develops strong perturbative instability followed by the formation of neutrino-nuggets and the early dark energy behaviour disappears around MRE. The stability of the nugget is achieved when the Fermi pressure balances the attractive scalar force and we numerically find "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2005.11889","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.CO","submitted_at":"2020-05-25T02:27:59Z","cross_cats_sorted":["gr-qc","hep-ph"],"title_canon_sha256":"877067efc54001a1be51587e24937bc1b64df2e1fff2c39fb2b97941601dfebc","abstract_canon_sha256":"bbdf114b14e98284a2abf144f6ab1b72b7e429904a17f68a44d68291ee42710c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:01:21.132783Z","signature_b64":"a703jYZCZBYW94RuY0JoTDdEFPDik+vHk/C8uUQNHNtLb0jfG+5q8hoB2AaF2sG01/WukqoAZ4FJnLEujWjbBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d146203cd8d81300cfac298afd773eae536ccf18e9b0b1084325eb3e5e450738","last_reissued_at":"2026-07-05T03:01:21.132353Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:01:21.132353Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Early mass varying neutrino dark energy: Nugget formation and Hubble anomaly","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["gr-qc","hep-ph"],"primary_cat":"astro-ph.CO","authors_text":"Antareep Gogoi, Prolay Chanda, Ravi Kumar Sharma, Subinoy Das","submitted_at":"2020-05-25T02:27:59Z","abstract_excerpt":"We present a novel scenario, in which light ($\\sim$ few \\rm{eV}) dark fermions (sterile neutrinos) interact with a scalar field like in mass varying neutrino dark energy theories. As the $\\rm{eV}$ sterile states naturally become non-relativistic before the Matter Radiation Equality (MRE), we show that the neutrino-scalar fluid develops strong perturbative instability followed by the formation of neutrino-nuggets and the early dark energy behaviour disappears around MRE. The stability of the nugget is achieved when the Fermi pressure balances the attractive scalar force and we numerically find "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.11889","kind":"arxiv","version":4},"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/2005.11889/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2005.11889","created_at":"2026-07-05T03:01:21.132414+00:00"},{"alias_kind":"arxiv_version","alias_value":"2005.11889v4","created_at":"2026-07-05T03:01:21.132414+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.11889","created_at":"2026-07-05T03:01:21.132414+00:00"},{"alias_kind":"pith_short_12","alias_value":"2FDCAPGY3AJQ","created_at":"2026-07-05T03:01:21.132414+00:00"},{"alias_kind":"pith_short_16","alias_value":"2FDCAPGY3AJQBT5M","created_at":"2026-07-05T03:01:21.132414+00:00"},{"alias_kind":"pith_short_8","alias_value":"2FDCAPGY","created_at":"2026-07-05T03:01:21.132414+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":8,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2607.06147","citing_title":"Imprint of swampland-inspired coupled early dark energy","ref_index":113,"is_internal_anchor":true},{"citing_arxiv_id":"2605.26116","citing_title":"Unifying Early and Late Dark Energy: Dynamical Requirements and Obstructions","ref_index":49,"is_internal_anchor":false},{"citing_arxiv_id":"2606.31362","citing_title":"Running into tension: primordial black holes from ultra-slow-roll inflation, spectral running, and the Hubble tension","ref_index":295,"is_internal_anchor":false},{"citing_arxiv_id":"2605.14977","citing_title":"Unified dark sector and Hubble-tension alleviation in scalar-vector-tensor gravity","ref_index":12,"is_internal_anchor":false},{"citing_arxiv_id":"2510.24682","citing_title":"Harrison-Zeldovich attractor: From Planck to ACT results","ref_index":98,"is_internal_anchor":false},{"citing_arxiv_id":"2103.01183","citing_title":"In the Realm of the Hubble tension $-$ a Review of Solutions","ref_index":76,"is_internal_anchor":false},{"citing_arxiv_id":"2604.08530","citing_title":"Disentangling cosmic distance tensions with early and late dark energy","ref_index":66,"is_internal_anchor":false},{"citing_arxiv_id":"2604.13535","citing_title":"Double the axions, half the tension: multi-field early dark energy eases the Hubble tension","ref_index":109,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ","json":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ.json","graph_json":"https://pith.science/api/pith-number/2FDCAPGY3AJQBT5MFGFP25Z6VZ/graph.json","events_json":"https://pith.science/api/pith-number/2FDCAPGY3AJQBT5MFGFP25Z6VZ/events.json","paper":"https://pith.science/paper/2FDCAPGY"},"agent_actions":{"view_html":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ","download_json":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ.json","view_paper":"https://pith.science/paper/2FDCAPGY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2005.11889&json=true","fetch_graph":"https://pith.science/api/pith-number/2FDCAPGY3AJQBT5MFGFP25Z6VZ/graph.json","fetch_events":"https://pith.science/api/pith-number/2FDCAPGY3AJQBT5MFGFP25Z6VZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ/action/storage_attestation","attest_author":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ/action/author_attestation","sign_citation":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ/action/citation_signature","submit_replication":"https://pith.science/pith/2FDCAPGY3AJQBT5MFGFP25Z6VZ/action/replication_record"}},"created_at":"2026-07-05T03:01:21.132414+00:00","updated_at":"2026-07-05T03:01:21.132414+00:00"}