{"id":"https://openalex.org/W7202254342","doi":"https://doi.org/10.48550/arxiv.2608.10593","title":"Octupolar Gravitational Radiation in de Sitter Spacetime","display_name":"Octupolar Gravitational Radiation in de Sitter Spacetime","publication_year":2026,"publication_date":"2026-08-11","ids":{"openalex":"https://openalex.org/W7202254342","doi":"https://doi.org/10.48550/arxiv.2608.10593"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2608.10593","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.10593","pdf_url":"https://arxiv.org/pdf/2608.10593","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"volume":null,"type":"preprint","is_traditional":true,"indexed_in":["arxiv","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2608.10593","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5122197633","display_name":"Harsh","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I19149307","display_name":"Chennai Mathematical Institute","ror":"https://ror.org/04zp24820","country_code":"IN","type":"education","lineage":["https://openalex.org/I19149307"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Harsh","raw_affiliation_strings":["Chennai Mathematical Institute , H1 , SIPCOT IT Park , Siruseri , Kelambakkam 603103 India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chennai Mathematical Institute , H1 , SIPCOT IT Park , Siruseri , Kelambakkam 603103 India","institution_ids":["https://openalex.org/I19149307"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5092885714","display_name":"Omkar Shetye","orcid":"https://orcid.org/0009-0002-3786-6142","observed_orcids":["https://orcid.org/0009-0002-3786-6142"]},"institutions":[{"id":"https://openalex.org/I126596746","display_name":"Jagiellonian University","ror":"https://ror.org/03bqmcz70","country_code":"PL","type":"education","lineage":["https://openalex.org/I126596746"]}],"countries":["PL"],"is_corresponding":false,"raw_author_name":"Shetye, Omkar","raw_affiliation_strings":["Instytut Fizyki Teoretycznej , Uniwersytet Jagiello\u0144ski , ul. \u0141ojasiewicza 11 , 30-348 Krak\u00f3w , Poland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Instytut Fizyki Teoretycznej , Uniwersytet Jagiello\u0144ski , ul. \u0141ojasiewicza 11 , 30-348 Krak\u00f3w , Poland","institution_ids":["https://openalex.org/I126596746"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079559438","display_name":"Amitabh Virmani C","orcid":"https://orcid.org/0000-0001-7701-4839","observed_orcids":["https://orcid.org/0000-0001-7701-4839"]},"institutions":[{"id":"https://openalex.org/I19149307","display_name":"Chennai Mathematical Institute","ror":"https://ror.org/04zp24820","country_code":"IN","type":"education","lineage":["https://openalex.org/I19149307"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Virmani, Amitabh","raw_affiliation_strings":["Chennai Mathematical Institute , H1 , SIPCOT IT Park , Siruseri , Kelambakkam 603103 India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Chennai Mathematical Institute , H1 , SIPCOT IT Park , Siruseri , Kelambakkam 603103 India","institution_ids":["https://openalex.org/I19149307"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories","score":0.7681000232696533,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10095","display_name":"Cosmology and Gravitation Theories","score":0.7681000232696533,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10463","display_name":"Pulsars and Gravitational Waves Research","score":0.120899997651577,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11960","display_name":"Relativity and Gravitational Theory","score":0.04529999941587448,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/de-sitter-space","display_name":"de Sitter space","score":0.9980000257492065},{"id":"https://openalex.org/keywords/multipole-expansion","display_name":"multipole expansion","score":0.9610000252723694},{"id":"https://openalex.org/keywords/poincare-patch","display_name":"Poincar\u00e9 patch","score":0.9380000233650208},{"id":"https://openalex.org/keywords/spherical-harmonic-analysis","display_name":"spherical harmonic analysis","score":0.6389999985694885},{"id":"https://openalex.org/keywords/metric-perturbations","display_name":"metric perturbations","score":0.8180000185966492},{"id":"https://openalex.org/keywords/linearized-gravity","display_name":"linearized gravity","score":0.43299999833106995}],"concepts":[{"id":"https://openalex.org/C52765159","wikidata":"https://www.wikidata.org/wiki/Q1027847","display_name":"Multipole expansion","level":2,"score":0.8489999771118164},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.8138999938964844},{"id":"https://openalex.org/C19262093","wikidata":"https://www.wikidata.org/wiki/Q3036474","display_name":"De Sitter universe","level":3,"score":0.7265999913215637},{"id":"https://openalex.org/C22366356","wikidata":"https://www.wikidata.org/wiki/Q1179448","display_name":"De Sitter space","level":4,"score":0.6414999961853027},{"id":"https://openalex.org/C130187892","wikidata":"https://www.wikidata.org/wiki/Q133327","display_name":"Spacetime","level":2,"score":0.5910000205039978},{"id":"https://openalex.org/C37914503","wikidata":"https://www.wikidata.org/wiki/Q156495","display_name":"Mathematical physics","level":1,"score":0.5853999853134155},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.5242000222206116},{"id":"https://openalex.org/C107829132","wikidata":"https://www.wikidata.org/wiki/Q574780","display_name":"Anti-de Sitter space","level":2,"score":0.5103999972343445},{"id":"https://openalex.org/C2780100471","wikidata":"https://www.wikidata.org/wiki/Q17005905","display_name":"Cosmological perturbation theory","level":3,"score":0.4578000009059906},{"id":"https://openalex.org/C3768446","wikidata":"https://www.wikidata.org/wiki/Q877100","display_name":"Spherical harmonics","level":2,"score":0.447299987077713},{"id":"https://openalex.org/C124017977","wikidata":"https://www.wikidata.org/wiki/Q11412","display_name":"Gravitation","level":2,"score":0.4327999949455261},{"id":"https://openalex.org/C88118005","wikidata":"https://www.wikidata.org/wiki/Q5244743","display_name":"de Sitter invariant special relativity","level":5,"score":0.4300000071525574},{"id":"https://openalex.org/C155281189","wikidata":"https://www.wikidata.org/wiki/Q3518150","display_name":"Tensor (intrinsic definition)","level":2,"score":0.4262999892234802},{"id":"https://openalex.org/C190330329","wikidata":"https://www.wikidata.org/wiki/Q190035","display_name":"Gravitational wave","level":2,"score":0.40290001034736633},{"id":"https://openalex.org/C14257148","wikidata":"https://www.wikidata.org/wiki/Q558066","display_name":"Gravitational field","level":2,"score":0.3919000029563904},{"id":"https://openalex.org/C147452769","wikidata":"https://www.wikidata.org/wiki/Q11452","display_name":"General relativity","level":2,"score":0.3781999945640564},{"id":"https://openalex.org/C33332235","wikidata":"https://www.wikidata.org/wiki/Q18362","display_name":"Theoretical physics","level":1,"score":0.3774999976158142},{"id":"https://openalex.org/C49811471","wikidata":"https://www.wikidata.org/wiki/Q5244744","display_name":"de Sitter\u2013Schwarzschild metric","level":4,"score":0.34630000591278076},{"id":"https://openalex.org/C3079626","wikidata":"https://www.wikidata.org/wiki/Q234881","display_name":"Quantum electrodynamics","level":1,"score":0.34369999170303345},{"id":"https://openalex.org/C8466233","wikidata":"https://www.wikidata.org/wiki/Q757269","display_name":"Metric tensor","level":3,"score":0.3393000066280365},{"id":"https://openalex.org/C77237485","wikidata":"https://www.wikidata.org/wiki/Q7917842","display_name":"Vector spherical harmonics","level":3,"score":0.32899999618530273},{"id":"https://openalex.org/C177918212","wikidata":"https://www.wikidata.org/wiki/Q803623","display_name":"Perturbation (astronomy)","level":2,"score":0.3003000020980835},{"id":"https://openalex.org/C74902906","wikidata":"https://www.wikidata.org/wiki/Q1190858","display_name":"Radiative transfer","level":2,"score":0.28209999203681946},{"id":"https://openalex.org/C26405456","wikidata":"https://www.wikidata.org/wiki/Q338","display_name":"Cosmology","level":2,"score":0.2793999910354614},{"id":"https://openalex.org/C207297109","wikidata":"https://www.wikidata.org/wiki/Q15605","display_name":"Cosmic microwave background","level":3,"score":0.2775000035762787},{"id":"https://openalex.org/C166077713","wikidata":"https://www.wikidata.org/wiki/Q1758924","display_name":"Tensor field","level":3,"score":0.27559998631477356},{"id":"https://openalex.org/C153385146","wikidata":"https://www.wikidata.org/wiki/Q18335","display_name":"Radiation","level":2,"score":0.26080000400543213},{"id":"https://openalex.org/C79464548","wikidata":"https://www.wikidata.org/wiki/Q464794","display_name":"Minkowski space","level":2,"score":0.2597000002861023},{"id":"https://openalex.org/C73301696","wikidata":"https://www.wikidata.org/wiki/Q5469984","display_name":"Formalism (music)","level":3,"score":0.25929999351501465},{"id":"https://openalex.org/C134328617","wikidata":"https://www.wikidata.org/wiki/Q546984","display_name":"Linearized gravity","level":3,"score":0.2572999894618988},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.2563000023365021},{"id":"https://openalex.org/C2780791080","wikidata":"https://www.wikidata.org/wiki/Q273711","display_name":"Einstein field equations","level":3,"score":0.2540000081062317},{"id":"https://openalex.org/C108804581","wikidata":"https://www.wikidata.org/wiki/Q5447001","display_name":"Field equation","level":2,"score":0.25279998779296875},{"id":"https://openalex.org/C85725439","wikidata":"https://www.wikidata.org/wiki/Q466686","display_name":"Anisotropy","level":2,"score":0.25209999084472656},{"id":"https://openalex.org/C174256460","wikidata":"https://www.wikidata.org/wiki/Q911364","display_name":"Perturbation theory (quantum mechanics)","level":2,"score":0.2502000033855438}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2608.10593","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.10593","pdf_url":"https://arxiv.org/pdf/2608.10593","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"doi:10.48550/arxiv.2608.10593","doi":"https://doi.org/10.48550/arxiv.2608.10593","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2608.10593","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2608.10593","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2608.10593","pdf_url":"https://arxiv.org/pdf/2608.10593","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":"2331-8422","issn":["2331-8422"],"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[{"id":"https://openalex.org/G1559184436","display_name":null,"funder_award_id":"CRG/2023/000545","funder_id":"https://openalex.org/F4320334771","funder_display_name":"Science and Engineering Research Board"}],"funders":[{"id":"https://openalex.org/F4320322753","display_name":"Infosys Foundation","ror":"https://ror.org/03bs18y54"},{"id":"https://openalex.org/F4320334771","display_name":"Science and Engineering Research Board","ror":"https://ror.org/03ffdsr55"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7202254342.pdf","grobid_xml":"https://content.openalex.org/works/W7202254342.grobid-xml"},"referenced_works_count":1,"referenced_works":["https://openalex.org/W2065128825"],"related_works":["https://openalex.org/W7223053473","https://openalex.org/W4292648381","https://openalex.org/W2065128825","https://openalex.org/W3164353115","https://openalex.org/W2012546716","https://openalex.org/W2010196988","https://openalex.org/W4399610264","https://openalex.org/W7096870478","https://openalex.org/W2804387483","https://openalex.org/W2022330102"],"abstract_inverted_index":{"We":[0],"derive":[1],"the":[2,19,28,45,50,54,75,94,111,124,133,137,141,144],"gravitational":[3],"radiation":[4,138],"generated":[5],"by":[6],"a":[7,67,81,87,107,115],"localised":[8],"matter":[9],"source":[10],"in":[11,18,23,27],"de":[12,55,159],"Sitter":[13,56,160],"spacetime":[14],"at":[15],"octupolar":[16,127],"order":[17],"multipolar":[20,57],"expansion,":[21],"working":[22],"generalised":[24],"harmonic":[25,117],"gauge":[26],"future":[29],"Poincar\u00e9":[30],"patch.":[31],"The":[32],"scalar,":[33],"vector,":[34],"and":[35,85,102,119,126,148,154],"tensor":[36,97],"perturbation":[37],"equations":[38],"are":[39],"solved":[40],"explicitly,":[41],"taking":[42],"into":[43,80,114],"account":[44],"cosmological":[46],"tail.":[47],"This":[48,130],"constitutes":[49],"first":[51],"extension":[52,89],"of":[53,99,110,136,143,158],"expansion":[58],"beyond":[59],"quadrupolar":[60,125],"order.":[61],"A":[62],"key":[63],"technical":[64],"ingredient":[65],"is":[66],"universal":[68],"multipole":[69,78],"moment":[70],"differentiation":[71],"identity,":[72],"which":[73],"unifies":[74],"relations":[76],"between":[77],"moments":[79],"single":[82],"recursive":[83],"formula":[84],"enables":[86],"controlled":[88],"to":[90,122],"higher":[91],"multipoles.":[92],"Using":[93],"symmetric":[95],"trace-free":[96],"formalism":[98],"Blanchet,":[100],"Damour,":[101],"Iyer,":[103],"we":[104],"further":[105],"develop":[106],"systematic":[108],"translation":[109],"radiative":[112],"solution":[113],"spherical":[116],"basis,":[118],"apply":[120],"it":[121],"both":[123],"metric":[128],"perturbations.":[129],"representation":[131],"renders":[132],"angular":[134],"structure":[135],"manifest,":[139],"simplifies":[140],"verification":[142],"linearised":[145],"field":[146],"equations,":[147],"facilitates":[149],"direct":[150],"comparison":[151],"with":[152],"Bondi-gauge":[153],"other":[155],"perturbative":[156],"treatments":[157],"spacetime.":[161]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-08-13T00:00:00"}