{"id":"https://openalex.org/W7214213558","doi":"https://doi.org/10.48550/arxiv.2609.26827","title":"Comment on \"Ultraviolet Completion of the Big Bang in Quadratic Gravity\"","display_name":"Comment on \"Ultraviolet Completion of the Big Bang in Quadratic Gravity\"","publication_year":2026,"publication_date":"2026-09-20","ids":{"openalex":"https://openalex.org/W7214213558","doi":"https://doi.org/10.48550/arxiv.2609.26827"},"language":"en","primary_location":{"id":"pmh:oai:arXiv.org:2609.26827","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.26827","pdf_url":"https://arxiv.org/pdf/2609.26827","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/2609.26827","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5152681995","display_name":"Mark A. Shinn","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Shinn, Mark A.","raw_affiliation_strings":["Dallas , Texas , USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dallas , Texas , USA","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5152681995"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"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":0.9731000065803528,"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":0.9731000065803528,"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/T11415","display_name":"Noncommutative and Quantum Gravity Theories","score":0.014999999664723873,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"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/T10025","display_name":"Black Holes and Theoretical Physics","score":0.007600000128149986,"subfield":{"id":"https://openalex.org/subfields/3106","display_name":"Nuclear and High Energy Physics"},"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/quadratic-gravity","display_name":"quadratic gravity","score":0.6949999928474426},{"id":"https://openalex.org/keywords/no-boundary-proposal","display_name":"no-boundary proposal","score":0.7519999742507935},{"id":"https://openalex.org/keywords/trace-anomaly","display_name":"trace anomaly","score":0.6320000290870667},{"id":"https://openalex.org/keywords/one-loop-renormalization-group","display_name":"one-loop renormalization group","score":0.7129999995231628},{"id":"https://openalex.org/keywords/inflationary-initial-conditions","display_name":"inflationary initial conditions","score":0.6119999885559082}],"concepts":[{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.636900007724762},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.59170001745224},{"id":"https://openalex.org/C2681867","wikidata":"https://www.wikidata.org/wiki/Q690935","display_name":"Saddle point","level":2,"score":0.5741999745368958},{"id":"https://openalex.org/C200941418","wikidata":"https://www.wikidata.org/wiki/Q273508","display_name":"Inflation (cosmology)","level":2,"score":0.499099999666214},{"id":"https://openalex.org/C2777127463","wikidata":"https://www.wikidata.org/wiki/Q10862618","display_name":"Saddle","level":2,"score":0.492900013923645},{"id":"https://openalex.org/C2781089630","wikidata":"https://www.wikidata.org/wiki/Q21856745","display_name":"Realization (probability)","level":2,"score":0.4851999878883362},{"id":"https://openalex.org/C12997251","wikidata":"https://www.wikidata.org/wiki/Q567560","display_name":"Anomaly (physics)","level":2,"score":0.4659999907016754},{"id":"https://openalex.org/C75291252","wikidata":"https://www.wikidata.org/wiki/Q1315756","display_name":"TRACE (psycholinguistics)","level":2,"score":0.4496999979019165},{"id":"https://openalex.org/C131584629","wikidata":"https://www.wikidata.org/wiki/Q4308705","display_name":"Coupling (piping)","level":2,"score":0.43779999017715454},{"id":"https://openalex.org/C62884695","wikidata":"https://www.wikidata.org/wiki/Q184871","display_name":"Euler's formula","level":2,"score":0.423799991607666},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.37790000438690186},{"id":"https://openalex.org/C188386629","wikidata":"https://www.wikidata.org/wiki/Q2902142","display_name":"Big Bang (financial markets)","level":2,"score":0.37700000405311584},{"id":"https://openalex.org/C77553402","wikidata":"https://www.wikidata.org/wiki/Q13222579","display_name":"Upper and lower bounds","level":2,"score":0.3463999927043915},{"id":"https://openalex.org/C182306322","wikidata":"https://www.wikidata.org/wiki/Q1779371","display_name":"Order (exchange)","level":2,"score":0.322299987077713},{"id":"https://openalex.org/C98214594","wikidata":"https://www.wikidata.org/wiki/Q850275","display_name":"Conformal map","level":2,"score":0.3151000142097473},{"id":"https://openalex.org/C2780791683","wikidata":"https://www.wikidata.org/wiki/Q846785","display_name":"Action (physics)","level":2,"score":0.3147999942302704},{"id":"https://openalex.org/C178650346","wikidata":"https://www.wikidata.org/wiki/Q201984","display_name":"Covariance","level":2,"score":0.31349998712539673},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.3093999922275543},{"id":"https://openalex.org/C88626702","wikidata":"https://www.wikidata.org/wiki/Q1128903","display_name":"Continuation","level":2,"score":0.30300000309944153},{"id":"https://openalex.org/C129782007","wikidata":"https://www.wikidata.org/wiki/Q162886","display_name":"Euclidean geometry","level":2,"score":0.28459998965263367}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:arXiv.org:2609.26827","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.26827","pdf_url":"https://arxiv.org/pdf/2609.26827","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.2609.26827","doi":"https://doi.org/10.48550/arxiv.2609.26827","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2609.26827","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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Preprint"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2609.26827","doi":null,"is_oa":true,"landing_page_url":"https://arxiv.org/abs/2609.26827","pdf_url":"https://arxiv.org/pdf/2609.26827","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":[],"funders":[],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7214213558.pdf","grobid_xml":"https://content.openalex.org/works/W7214213558.grobid-xml"},"referenced_works_count":4,"referenced_works":["https://openalex.org/W1895947806","https://openalex.org/W1995280289","https://openalex.org/W2198040664","https://openalex.org/W4416057035"],"related_works":["https://openalex.org/W7095035884","https://openalex.org/W4416057035","https://openalex.org/W7214015405","https://openalex.org/W6884987384","https://openalex.org/W2162150770","https://openalex.org/W2921828818","https://openalex.org/W7115590398","https://openalex.org/W3111856404","https://openalex.org/W7204000237","https://openalex.org/W2917741494"],"abstract_inverted_index":{"We":[0],"examine":[1],"the":[2,17,34,44,48,55,60,70,80,87,111,116,147],"round":[3,76,134,149],"Euclidean":[4],"no-boundary":[5],"saddle":[6],"proposed":[7,88,148],"by":[8,110,140],"Liu,":[9],"Quintin,":[10],"and":[11,59,123,136,152],"Afshordi":[12],"in":[13,20,43],"\"Ultraviolet":[14],"Completion":[15],"of":[16,29,69,124],"Big":[18],"Bang":[19],"Quadratic":[21],"Gravity.\"":[22],"For":[23],"a":[24,66,75,106,133],"free,":[25],"massless,":[26],"conformal":[27],"realization":[28],"their":[30],"large":[31],"matter":[32,45,113],"sector,":[33],"omitted":[35],"type-A":[36],"trace":[37,62],"anomaly":[38,83],"contributes":[39],"at":[40],"leading":[41],"order":[42,125],"multiplicity.":[46],"Within":[47],"one-loop":[49],"renormalization-group-improved":[50],"pure":[51],"quadratic":[52],"truncation,":[53],"both":[54],"sphere":[56,77],"effective":[57],"action":[58],"local":[61,128],"equation":[63],"show":[64],"that":[65,94],"stationary":[67,97],"point":[68],"running":[71],"$R^2$":[72],"coupling":[73,98],"supports":[74],"only":[78],"if":[79],"total":[81],"Euler":[82],"coefficient":[84,103],"vanishes.":[85],"Using":[86],"beta":[89],"function,":[90],"we":[91],"further":[92],"find":[93],"no":[95],"real":[96],"ratio":[99],"exists":[100],"when":[101,115],"this":[102],"exceeds":[104],"$79/420$,":[105],"bound":[107],"violated":[108],"parametrically":[109],"assumed":[112],"sector":[114],"remaining":[117],"gravitational":[118],"contributions":[119],"are":[120,159],"perturbatively":[121],"controlled":[122],"unity.":[126],"The":[127],"obstruction":[129],"also":[130],"applies":[131],"to":[132,156],"half-sphere":[135],"cannot":[137],"be":[138],"removed":[139],"shifting":[141],"its":[142,153],"radius.":[143],"Under":[144],"these":[145],"assumptions,":[146],"starting":[150],"geometry":[151],"stated":[154],"continuation":[155],"Lorentzian":[157],"inflation":[158,164],"excluded,":[160],"without":[161],"ruling":[162],"out":[163],"from":[165],"other":[166],"initial":[167],"conditions.":[168]},"counts_by_year":[],"updated_date":"2026-11-07T11:25:07.637180","created_date":"2026-09-25T00:00:00"}