{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"3365948997564c286a03662f6a70f9df67f5b19c9ea80f7a9e51473651fe230b","created":"2026-10-03T07:17:52Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"6031f9697394f17d9d663dd7bb31e609df929fb8db505113b9ec6a17b6d418b2","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"qft.double-copy","field":"qft","n":"1","review_cite":"Z. Bern, J. J. Carrasco, M. Chiodaroli, H. Johansson, R. Roiban, The SAGEX Review on Scattering Amplitudes, Chapter 2: An Invitation to Color-Kinematics Duality and the Double Copy, arXiv:2203.13013, 2022","review_link":"https://arxiv.org/abs/2203.13013","review_verified":"true","summary":"Gravity scattering can be computed by squaring gluon scattering (the particles of the strong force), once the gluon formulas are written in a special form. Whether this squaring works at every loop order and for exact, non-perturbative solutions is unknown.","title":"Double copy beyond tree level and perturbation theory","topic_ref":null,"why":"If the relation holds in general, gravity calculations, from gravitational-wave templates to the ultraviolet behavior of supergravity, reduce to much simpler gauge-theory calculations."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"1423f8d1d6c45d6696107efe735144c4230462c57b3f02acac8489226faee33e","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"0747d74bb55828922ab89669fa1f21f2b1efed2914a8d1a76643fe626b0e32a4","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"wOHW7ij3J_nHYNeE0vCtT_pbziCQzHB2ZoMZsx0S9uxo6EjpwIU3A_S88MkaynZnpvNm1NMtj86aq_tv1wEwBw"},"schema":"pubphys.envelope/1"},"record_hash":"1423f8d1d6c45d6696107efe735144c4230462c57b3f02acac8489226faee33e","leaf_index":314}