{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"72a7ff363e1940d7ca8340c8476d416922ef85cc687c3e9c16b77897b36934ed","created":"2026-10-03T07:18:09Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"5137a30963eacd7d5d689ea84d2ef0c0feb60b05a9c5debb434c390b7c651156","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"yes-no","assisted_by":[],"external_id":"qft.double-copy.ads-double-copy","kind":"well-posed","literature_status":"partially-resolved","n":"1","parents":[],"plain":"The squaring trick is proven for tree-level scattering in flat spacetime. Whether it works in anti-de Sitter space, a curved spacetime used in holography, is unclear.","posed_since":"","precise":"Determine whether tree-level boundary correlators of gravitons in $\\mathrm{AdS}_{d+1}$ at all multiplicities, and at one loop, follow from gluon correlators by a color-to-kinematics replacement governed by a kinematic algebra that reduces to the flat-space BCJ structure in the flat-space limit. An answer is a general construction with proof, or a counterexample correlator.","problem_ref":null,"references":"","settled_by":"A proof for all multiplicities at tree level, or a correlator for which no double-copy form exists.","status_note":"Low-point tree-level examples in AdS and de Sitter exist; no general construction is established as of 2026.","title":"Double copy for scattering in anti-de Sitter space","topic_ref":"1423f8d1d6c45d6696107efe735144c4230462c57b3f02acac8489226faee33e"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"6efdf320f28815580b2a6d3c80f9e9d4d75abc9d6588dc28742e1cf6be45dfdd","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"80accebccb55e0abdf8723fc472344a5e00d962203b54999d1e965c60dde2881","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"r5z-ZNjkhv3QzPcwfaVNpBOhb5IoYZGNpz4qAKol7Nv4uqMFFd7X2Dw_40R0SMRmD9B2il5XrmA6gZyQGNCzDg"},"schema":"pubphys.envelope/1"},"record_hash":"6efdf320f28815580b2a6d3c80f9e9d4d75abc9d6588dc28742e1cf6be45dfdd","leaf_index":1904}