{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:Q6HVHJMII76V3X6NGAXQBEZVQU","short_pith_number":"pith:Q6HVHJMI","schema_version":"1.0","canonical_sha256":"878f53a58847fd5ddfcd302f0093358509499d45e028d1151b6b31ca81356b9a","source":{"kind":"arxiv","id":"1506.08825","version":1},"attestation_state":"computed","paper":{"title":"Non-perturbative renormalization group calculation of the quasi-particle velocity and the dielectric function of graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Anand Sharma, Andreas R\\\"uckriegel, Carsten Bauer, Peter Kopietz","submitted_at":"2015-06-29T20:00:40Z","abstract_excerpt":"Using a non-perturbative functional renormalization group approach we calculate the renormalized quasi-particle velocity $v (k)$ and the static dielectric function $\\epsilon ( k )$ of suspended graphene as functions of an external momentum $k$. Our numerical result for $v (k )$ can be fitted by $v ( k ) / v_F = A + B \\ln ( \\Lambda_0 / k )$, where $v_F$ is the bare Fermi velocity, $\\Lambda_0$ is an ultraviolet cutoff, and $A = 1.37$, $B =0.51$ for the physically relevant value ($e^2/v_F =2.2$) of the coupling constant. In contrast to calculations based on the static random-phase approximation, "},"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":"1506.08825","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2015-06-29T20:00:40Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"b654524b44331d26a311709ade2067f5fe3d86de7c84cfd0f0bbbb074fb3c301","abstract_canon_sha256":"dea7bdd06aaf35ef666f724d20bf3cf89675512f3f52746aa68e4ae97ffc0885"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:11.652084Z","signature_b64":"608NSEO4skGYUJsfSWhRsInlArONIwmkbXfeUIPRt/ZhtmBXl0xy1HsGC/9D0KFfFuBYyH8tEhfxO8+EzgiQDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"878f53a58847fd5ddfcd302f0093358509499d45e028d1151b6b31ca81356b9a","last_reissued_at":"2026-05-18T01:25:11.651670Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:11.651670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Non-perturbative renormalization group calculation of the quasi-particle velocity and the dielectric function of graphene","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.str-el","authors_text":"Anand Sharma, Andreas R\\\"uckriegel, Carsten Bauer, Peter Kopietz","submitted_at":"2015-06-29T20:00:40Z","abstract_excerpt":"Using a non-perturbative functional renormalization group approach we calculate the renormalized quasi-particle velocity $v (k)$ and the static dielectric function $\\epsilon ( k )$ of suspended graphene as functions of an external momentum $k$. Our numerical result for $v (k )$ can be fitted by $v ( k ) / v_F = A + B \\ln ( \\Lambda_0 / k )$, where $v_F$ is the bare Fermi velocity, $\\Lambda_0$ is an ultraviolet cutoff, and $A = 1.37$, $B =0.51$ for the physically relevant value ($e^2/v_F =2.2$) of the coupling constant. In contrast to calculations based on the static random-phase approximation, "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.08825","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1506.08825","created_at":"2026-05-18T01:25:11.651730+00:00"},{"alias_kind":"arxiv_version","alias_value":"1506.08825v1","created_at":"2026-05-18T01:25:11.651730+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.08825","created_at":"2026-05-18T01:25:11.651730+00:00"},{"alias_kind":"pith_short_12","alias_value":"Q6HVHJMII76V","created_at":"2026-05-18T12:29:37.295048+00:00"},{"alias_kind":"pith_short_16","alias_value":"Q6HVHJMII76V3X6N","created_at":"2026-05-18T12:29:37.295048+00:00"},{"alias_kind":"pith_short_8","alias_value":"Q6HVHJMI","created_at":"2026-05-18T12:29:37.295048+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU","json":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU.json","graph_json":"https://pith.science/api/pith-number/Q6HVHJMII76V3X6NGAXQBEZVQU/graph.json","events_json":"https://pith.science/api/pith-number/Q6HVHJMII76V3X6NGAXQBEZVQU/events.json","paper":"https://pith.science/paper/Q6HVHJMI"},"agent_actions":{"view_html":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU","download_json":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU.json","view_paper":"https://pith.science/paper/Q6HVHJMI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1506.08825&json=true","fetch_graph":"https://pith.science/api/pith-number/Q6HVHJMII76V3X6NGAXQBEZVQU/graph.json","fetch_events":"https://pith.science/api/pith-number/Q6HVHJMII76V3X6NGAXQBEZVQU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU/action/storage_attestation","attest_author":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU/action/author_attestation","sign_citation":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU/action/citation_signature","submit_replication":"https://pith.science/pith/Q6HVHJMII76V3X6NGAXQBEZVQU/action/replication_record"}},"created_at":"2026-05-18T01:25:11.651730+00:00","updated_at":"2026-05-18T01:25:11.651730+00:00"}